{"id":1165,"date":"2023-08-09T21:20:45","date_gmt":"2023-08-09T21:20:45","guid":{"rendered":"https:\/\/guncoupons.net\/?p=1165"},"modified":"2023-08-09T21:20:45","modified_gmt":"2023-08-09T21:20:45","slug":"ammo-what-you-want-vs-what-you-have","status":"publish","type":"post","link":"https:\/\/guncoupons.net\/?p=1165","title":{"rendered":"Ammo: What You Want vs. What You Have"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div>\n<div class=\"article-image\">\n\t\t\t\t\t\t\t<\/div>\n<p>New shooters should be aware of this. Old hands sometimes take this for granted. What are we talking about? Always being sure of your <a href=\"https:\/\/www.cheaperthandirt.com\/ammunition\/?utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">ammunition<\/a> caliber and type before loading your firearm. It sounds simple and rather common sense, yet shooter\u2019s fail. In today\u2019s world of firearms and ammo shortages, with the vast array of <a href=\"https:\/\/www.cheaperthandirt.com\/shop-by?cgid=99901&amp;searchBy=Caliber&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">calibers<\/a>, it is extremely important when purchasing ammunition to be specific about the exact type of ammo you would like to purchase.<\/p>\n<p>Double check what the salesman picks out for you. In most cases, other than the fact that you have spent money on something you did not want and most likely have no use for, there are some situations that can lead to catastrophic problems which should be obvious. But let\u2019s review them anyway.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"393\" height=\"576\" alt=\"Left to right: .22 Short, Long, and .22 WMR\" class=\"wp-image-89676 jetpack-lazy-image\" data-recalc-dims=\"1\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?w=393&amp;ssl=1 393w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?resize=205%2C300&amp;ssl=1 205w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?resize=150%2C220&amp;ssl=1 150w\" data-lazy-sizes=\"(max-width: 393px) 100vw, 393px\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?resize=393%2C576&amp;is-pending-load=1#038;ssl=1\"\/><noscript><img decoding=\"async\" loading=\"lazy\" width=\"393\" height=\"576\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?resize=393%2C576&amp;ssl=1\" alt=\"Left to right: .22 Short, Long, and .22 WMR\" class=\"wp-image-89676\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?w=393&amp;ssl=1 393w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?resize=205%2C300&amp;ssl=1 205w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-1.jpg?resize=150%2C220&amp;ssl=1 150w\" sizes=\"auto, (max-width: 393px) 100vw, 393px\" data-recalc-dims=\"1\"\/><\/noscript><figcaption>Left to right: .22 Short, Long, and .22 WMR.<\/figcaption><\/figure>\n<\/div>\n<h2>Common Examples<\/h2>\n<p>As an example, let\u2019s start with rimfire cartridges. It is important to note that there are many different cartridges in .22 caliber. In the rimfire selection alone, we find chamberings such as <a href=\"https:\/\/www.cheaperthandirt.com\/.22-short-.22-bb-.22-cb\/ammunition\/?brand=.22Short%2F.22BB%2F.22CB&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.22 CB, .22 BB, .22 Short<\/a>, <a href=\"https:\/\/www.cheaperthandirt.com\/.22-long\/ammunition\/?brand=.22Long&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.22 Long<\/a>, and <a href=\"https:\/\/www.cheaperthandirt.com\/.22-long-rifle\/ammunition\/?brand=.22LongRifle&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.22 Long Rifle<\/a>, .22 Extra Long, <a href=\"https:\/\/www.cheaperthandirt.com\/.22-magnum\/ammunition\/?brand=.22Magnum&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.22 Winchester Magnum Rimfire<\/a>, .22 Winchester Rimfire, .22 Hornet, and .22 Remington \u2014 just to name a few. All of those have similar diameter bullets, but the size and shape of the cartridge cases and bullet styles vary. Therefore, if a firearm were chambered for the .22 Long cartridge, the user would not be able to fit a .22 Long Rifle cartridge into the chamber.<\/p>\n<div class=\"code-block code-block-2 ai-viewport-2 ai-viewport-3\" style=\"margin: 8px auto; text-align: center; display: block; clear: both;\">\n<!--Mid Article Ad for Mobile and Tablet--><br \/>\n<a target=\"\u201d_blank\u201d\" href=\"https:\/\/www.cheaperthandirt.com\/contest.html?cid=contest?utm_source=CTD_Blog_AD&amp;utm_medium=referral&amp;utm_campaign=blog_range_day_friday_mobile&amp;utm_content=square\" rel=\"noopener\"> <img decoding=\"async\" data-recalc-dims=\"1\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/rdf_aug23_ad_mob.jpg?w=640&amp;is-pending-load=1#038;ssl=1\" srcset=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" class=\" jetpack-lazy-image\"\/><noscript><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/rdf_aug23_ad_mob.jpg?w=640&amp;ssl=1\" data-recalc-dims=\"1\"\/><\/noscript><\/a><\/div>\n<p>The same thing can be said of other calibers as well. As an example, we have the cartridges with \u201838\u2019 in their description including the following, <a href=\"https:\/\/www.cheaperthandirt.com\/.380-acp-or-.380-auto\/ammunition\/?brand=.380ACPor.380Auto&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\">.380<\/a>, <a href=\"https:\/\/www.cheaperthandirt.com\/.38-sandw\/ammunition\/?brand=.38S&amp;W=&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.38 S&amp;W<\/a>, <a href=\"https:\/\/www.cheaperthandirt.com\/.38-special\/ammunition\/?brand=.38Special&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.38 Special<\/a>, .38 Short Colt, .38 Long Colt, and <a href=\"https:\/\/www.cheaperthandirt.com\/.38-super-automatic\/ammunition\/?brand=.38SuperAutomatic&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.38 Super<\/a>. When it comes to math, we were taught that 0.380 = 0.38. However, when it comes to cartridge sizes, you can throw what you learned out the window, because they are two completely different things.<\/p>\n<div class=\"code-block code-block-1 ai-viewport-1\" style=\"margin: 8px auto; text-align: center; display: block; clear: both;\">\n<!--Mid Article Ad for Desktop--><br \/>\n<a target=\"\u201d_blank\u201d\" href=\"https:\/\/www.cheaperthandirt.com\/contest.html?cid=contest\" rel=\"noopener\"> <img decoding=\"async\" align=\"center\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/rdf_aug23_ad.jpg?w=500&amp;is-pending-load=1#038;ssl=1\" srcset=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" class=\" jetpack-lazy-image\"\/><noscript><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/rdf_aug23_ad.jpg?w=500&amp;ssl=1\" align=\"center\" px=\"\" data-recalc-dims=\"1\"\/><\/noscript><\/a><\/div>\n<p>Let\u2019s consider the .380 ACP and the .38 Special as an example. As you can see from the photo not only are the lengths and cartridge profiles very different, the two bullets are also of slightly different diameters. The .38 Special has a .357-inch diameter bullet, and the .380 ACP has a .355-inch diameter bullet. Neither one is .38 in diameter\u2026 Go figure! Of course, most of what I have referred to thus far has been bullet diameter, but you may notice that the cartridge cases also differ.<\/p>\n<p>The confusion continues to occur when referring to many popular chamberings that many shooters both old and new take for granted. Let\u2019s take our old friend Dufus as an example. He goes into his local firearms emporium to pick up some ammo for his Whiz Bang Ogre Slayer and asks the salesman for, \u201cA box of .45.\u201d The salesman assumes Dufus wants .45 ACP and rings up a box.<\/p>\n<p>Dufus gets to the range and goes to load up only to realize the <a href=\"https:\/\/www.cheaperthandirt.com\/.45-acp-or-.45-auto\/ammunition\/?brand=.45ACPor.45Auto&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.45 ACP<\/a> will not chamber in his <a href=\"https:\/\/www.cheaperthandirt.com\/.45-gap\/ammunition\/?brand=.45GAP&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.45 GAP<\/a> no matter how hard he bangs on the slide trying to close it. Dufus should have been a bit more precise in asking for what he wanted and checked to see what was put in the bag.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"431\" height=\"504\" alt=\"The .45 GAP (left) alongside the classic .45 ACP (right)\" class=\"wp-image-89678 jetpack-lazy-image\" data-recalc-dims=\"1\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?w=431&amp;ssl=1 431w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?resize=257%2C300&amp;ssl=1 257w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?resize=150%2C175&amp;ssl=1 150w\" data-lazy-sizes=\"(max-width: 431px) 100vw, 431px\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?resize=431%2C504&amp;is-pending-load=1#038;ssl=1\"\/><noscript><img decoding=\"async\" loading=\"lazy\" width=\"431\" height=\"504\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?resize=431%2C504&amp;ssl=1\" alt=\"The .45 GAP (left) alongside the classic .45 ACP (right)\" class=\"wp-image-89678\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?w=431&amp;ssl=1 431w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?resize=257%2C300&amp;ssl=1 257w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-3.jpg?resize=150%2C175&amp;ssl=1 150w\" sizes=\"auto, (max-width: 431px) 100vw, 431px\" data-recalc-dims=\"1\"\/><\/noscript><figcaption>The .45 GAP (left) alongside the classic .45 ACP (right).<\/figcaption><\/figure>\n<\/div>\n<p>Although .45 ACP is popular, there are other .45 caliber cartridges. Dufus should have been more specific. But that, after all, is why his name is Dufus. If you want .45 ACP, .45 GAP, .45 Webley, <a href=\"https:\/\/www.cheaperthandirt.com\/.45-colt\/ammunition\/?brand=.45Colt&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.45 Long Colt<\/a> etc., be specific. As stated before, all these cartridges have dramatically different shapes and sizes.<\/p>\n<p>In the included photo, you will see a .45 GAP (left) and a .45 ACP (right) for comparison. As before, take note of the difference in the sizes and shapes of the cartridges. BTW, if you are not already aware, ACP stands for Automatic Colt Pistol and GAP stands for Glock Automatic Pistol.<\/p>\n<h2>9mm Ammo<\/h2>\n<p>Another example, and probably the most popular handgun cartridge sold today, is the 9mm\u2026 But 9mm what is an appropriate question. There is <a href=\"https:\/\/www.cheaperthandirt.com\/9mm-luger-or-9x19mm\/ammunition\/?brand=9mmLugeror9x19mm&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">9mm Parabellum, 9mm Luger, 9\u00d719<\/a>, 9\u00d718 Markov, 9\u00d718 Ultra, 9mm Bergmann, 9mm Largo, and 9mm Short which by the way is .380 ACP. Yikes!<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"243\" height=\"360\" alt=\".380 ACP (9mm Short) and .38 Special, right\" class=\"wp-image-89677 jetpack-lazy-image\" data-recalc-dims=\"1\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?w=243&amp;ssl=1 243w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?resize=203%2C300&amp;ssl=1 203w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?resize=150%2C222&amp;ssl=1 150w\" data-lazy-sizes=\"(max-width: 243px) 100vw, 243px\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?resize=243%2C360&amp;is-pending-load=1#038;ssl=1\"\/><noscript><img decoding=\"async\" loading=\"lazy\" width=\"243\" height=\"360\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?resize=243%2C360&amp;ssl=1\" alt=\".380 ACP (9mm Short) and .38 Special, right\" class=\"wp-image-89677\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?w=243&amp;ssl=1 243w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?resize=203%2C300&amp;ssl=1 203w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-2.jpg?resize=150%2C222&amp;ssl=1 150w\" sizes=\"auto, (max-width: 243px) 100vw, 243px\" data-recalc-dims=\"1\"\/><\/noscript><figcaption>On the left, the .380 ACP or 9mm Short if you like, and the .38 Special on the right.<\/figcaption><\/figure>\n<\/div>\n<p>The good news is that 9mm Parabellum, 9mm Luger, and 9X19 are different names for the same cartridge. I\u2019m sure you are asking, \u201cHow did it get so many names?\u201d The cartridge was developed by Georg Luger in 1901 and christened the 9mm Parabellum which means \u201cFor war.\u201d<\/p>\n<p>Because of its use in his new pistol, the P-08 it was also called the 9mm Luger. To make it more confusing to distinguish from other 9mm cartridges, it was also referred to by its metric case length, 9\u00d719. These examples are just the tip of the iceberg\u2026<\/p>\n<p>One more piece of confusing information can be supplied by examining the 7.62mm family of cartridges, including but not limited to, the following: <a href=\"https:\/\/www.cheaperthandirt.com\/7.62x25mm-tokarev\/ammunition\/?brand=7.62x25mmTokarev&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">7.62x25mm Tokarev<\/a>, <a href=\"https:\/\/www.cheaperthandirt.com\/7.62x51mm-nato\/ammunition\/?brand=7.62x51mmNATO&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">7.62x51mm NATO<\/a>, <a href=\"https:\/\/www.cheaperthandirt.com\/7.62x39mm\/ammunition\/?brand=7.62x39mm&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">7.62x39mm Soviet<\/a>, <a href=\"https:\/\/www.cheaperthandirt.com\/7.62x54r\/ammunition\/?brand=7.62x54R&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">7.62x54mmR<\/a> etc. The two most famous ones are the 7.62 NATO (<a href=\"https:\/\/www.cheaperthandirt.com\/.308-winchester\/ammunition\/?brand=.308Winchester&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.308 Winchester<\/a>) also referred to as the 7.62x51mm used in the FN-FAL, M14, Heckler &amp; Koch G3, SR25, etc. and the 7.62 Soviet (7.62x39mm) used by the SKS, AK-47, AKM, and Type 56 rifles.<\/p>\n<p>As you may have noted by now, it is easy to tell the difference between two cartridges when they are drastically different. But with many examples, you must look close to notice the difference. This same confusion and similarity applies to many other calibers.<\/p>\n<p>Because of this, the buyer must note the exact cartridge type anytime they are engaged in purchasing ammo. As amazing as it may seem, quite a few people are not aware of the differences between cartridges or even of the existence of other similar cartridges. There have been several instances where a buyer has walked into their local Firearms Emporium, asked for .38 cartridges, and ended up walking out with either .38 S&amp;W, .38 Super, or .38 Special, when they really wanted .380 ACP cartridges.<\/p>\n<div class=\"code-block code-block-4 ai-viewport-2 ai-viewport-3\" style=\"margin: 8px auto; text-align: center; display: block; clear: both;\">\n<!--End of Article Ad for Mobile and Tablet--><br \/>\n<a target=\"\u201d_blank\u201d\" href=\"https:\/\/www.cheaperthandirt.com\/ammunition\/bulk\/\" rel=\"noopener\"> <img decoding=\"async\" data-recalc-dims=\"1\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/06\/bulk_ammo_ad_mob.jpg?w=640&amp;is-pending-load=1#038;ssl=1\" srcset=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" class=\" jetpack-lazy-image\"\/><noscript><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/06\/bulk_ammo_ad_mob.jpg?w=640&amp;ssl=1\" data-recalc-dims=\"1\"\/><\/noscript><\/a><\/div>\n<div class=\"code-block code-block-3 ai-viewport-1\" style=\"margin: 8px auto; text-align: center; display: block; clear: both;\">\n<!--End of Article Ad for Desktop--><br \/>\n <img decoding=\"async\" align=\"center\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/rdf_aug23_ad.jpg?w=500&amp;is-pending-load=1#038;ssl=1\" srcset=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" class=\" jetpack-lazy-image\"\/><noscript><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/rdf_aug23_ad.jpg?w=500&amp;ssl=1\" align=\"center\" px=\"\" data-recalc-dims=\"1\"\/><\/noscript><\/div>\n<p>Likewise, they may have asked for .22 Long when they really wanted .22 Long Rifle. It is, and can be, a source of frustration to both the buyer and seller. Therefore, it is very important to be aware of the exact type of cartridge that a firearm accepts.<\/p>\n<h2>.223 and 5.56 Ammo<\/h2>\n<p>That confusion occurs when the calibers are really different, but what about the difference between 5.56mm and .223 Rem. ammunition?<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"467\" alt=\"infographic of the dimensions of the 5.56x4mm cartridge per C.I.P standards\" class=\"wp-image-89679 jetpack-lazy-image\" data-recalc-dims=\"1\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?resize=300%2C219&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?resize=150%2C109&amp;ssl=1 150w\" data-lazy-sizes=\"(max-width: 640px) 100vw, 640px\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?resize=640%2C467&amp;is-pending-load=1#038;ssl=1\"\/><noscript><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"467\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?resize=640%2C467&amp;ssl=1\" alt=\"infographic of the dimensions of the 5.56x4mm cartridge per C.I.P standards\" class=\"wp-image-89679\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?resize=300%2C219&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-4.jpg?resize=150%2C109&amp;ssl=1 150w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" data-recalc-dims=\"1\"\/><\/noscript><figcaption>The dimensions of the 5.56x4mm cartridge per C.I.P standards.<\/figcaption><\/figure>\n<\/div>\n<p>To many shooters \u2014 even knowledgeable ones \u2014 the <a href=\"https:\/\/www.cheaperthandirt.com\/5.56x45mm-nato\/ammunition\/?brand=5.56x45mmNATO&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">5.56mm NATO<\/a> cartridge and <a href=\"https:\/\/www.cheaperthandirt.com\/.223-remington\/ammunition\/?brand=.223Remington&amp;utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">.223 Remington<\/a> cartridge are the same dimensions. Therefore, shooter wrongly believe that they are interchangeable. That said, many people would advise against using one in a rifle that is designed for the other, so clearly there must be some differences so let\u2019s investigate.<\/p>\n<p>First, it must be noted that when the U.S. military started switching to the metric system in the 1950s, to better work with our NATO allies, the rest of the country stayed on the United States Customary Units of Measurement System. It remains so to the present day. Because of the U.S. military\u2019s switch, it refers to the diameter of the bullet as 5.56mm whereas the civilian market calls it .223 caliber (i.e., 0.223-inch diameter), even though they are the same diameter.<\/p>\n<p>It is safe to assume that when people refer to 5.56x45mm cartridge, they are referring to the military specification cartridge. However, when they say .223, they\u2019re usually referring to the civilian version of the cartridge designed by Remington.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"491\" alt=\"infographic of the dimensions of a .223 cartridge per C.I.P standards.\" class=\"wp-image-89680 jetpack-lazy-image\" data-recalc-dims=\"1\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?resize=300%2C230&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?resize=150%2C115&amp;ssl=1 150w\" data-lazy-sizes=\"(max-width: 640px) 100vw, 640px\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?resize=640%2C491&amp;is-pending-load=1#038;ssl=1\"\/><noscript><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"491\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?resize=640%2C491&amp;ssl=1\" alt=\"infographic of the dimensions of a .223 cartridge per C.I.P standards.\" class=\"wp-image-89680\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?resize=300%2C230&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-5.jpg?resize=150%2C115&amp;ssl=1 150w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" data-recalc-dims=\"1\"\/><\/noscript><figcaption>The dimensions of a .223 cartridge per C.I.P standards.<\/figcaption><\/figure>\n<\/div>\n<p>When comparing the cartridge dimensions, the 5.56x45mm NATO cartridge and .223 Remington have almost identical dimensions. Note: The operative word here is \u201c<em>almost.<\/em>\u201d They are similar enough in shape that either may fit into a firearm chambered for the other. The exception being the firearms with chambers cut to very tight tolerances.<\/p>\n<p>The big difference, and where the problem arises, is with the pressures generated by the two types of ammunition. The 5.56x45mm cartridge features thicker internal case walls than the .223 Remington cartridge. The .223 Rem. generates far less pressure because of that difference when compared to the 5.56x45mm cartridge.<\/p>\n<p>What this means is that it\u2019s generally safe to shoot .223 ammunition in a rifle designed for 5.56x45mm NATO cartridges. However, the reverse is not true. Firing 5.56x45mm ammo through a rifle designed for .223 ammo may cause excessive overpressure and stress to the rifle\u2019s gas system, barrel, and chamber. Because of design differences, the .223 AR rifles operates at much lower pressures and firing 5.56 ammunition will lead to an unsafe and dangerous situation.<\/p>\n<p>Conversely, firing .223 Remington cartridges through an AR rifle designed for 5.56x45mm ammo is generally considered safe, the slight differences in cartridge dimensions could result in making the rifle slightly less accurate and require it to be re zeroed.<\/p>\n<p>If you want to \u2018nerd out,\u2019 take a closer look to understand what\u2019s going on. The .223-inch and 5.5mm are not the same diameter. .223 converts to 5.6642mm \u2014 a significant difference of 0.1042mm. If you do the calculations, you\u2019ll notice that 1-inch equals 25.4mm. Therefore, .223 inches = .223 * 25.4 = 5.6642mm. Also, if you convert 5.56mm to inches, you\u2019ll find that it is approximately .219 inches, not .223 inches. So, what in the Sam Hill is going on here? If .223 inches is bigger than 5.56 mm, how are the dimensions of the two cartridges nearly equal?<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"479\" alt=\"LWRC M6IC-SPR in 5.56mm\" class=\"wp-image-89681 jetpack-lazy-image\" data-recalc-dims=\"1\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?resize=150%2C112&amp;ssl=1 150w\" data-lazy-sizes=\"(max-width: 640px) 100vw, 640px\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?resize=640%2C479&amp;is-pending-load=1#038;ssl=1\"\/><noscript><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"479\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?resize=640%2C479&amp;ssl=1\" alt=\"LWRC M6IC-SPR in 5.56mm\" class=\"wp-image-89681\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?resize=300%2C225&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-6.jpg?resize=150%2C112&amp;ssl=1 150w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" data-recalc-dims=\"1\"\/><\/noscript><figcaption>This is a LWRC M6IC-SPR in 5.56mm. Notice both the lower and upper receivers are marked. The .223 Remington can be safely fired in this rifle.<\/figcaption><\/figure>\n<\/div>\n<p>To explain this anomaly, we must go back in time and review how cartridges get their names. In the U.S., we tend to name cartridges after the groove diameter of the barrel \u2014 rather than the diameter of the bullet \u2014 at least since 1950 or so. On the other hand, in Europe where they tend to do everything backwards just to be different (except in the UK), it likes to name its ammunition after the bore diameter of the barrel. Because the specifications of the 5.56x45mm cartridge came from Belgium, the 5.56 refers to the bore diameter of the barrel.<\/p>\n<p>The .223 was developed in the U.S. (where we do everything right), so .223 refers to the groove diameter of the barrel. So, what is the bore diameter of an <a href=\"https:\/\/www.cheaperthandirt.com\/firearms\/tactical\/ar-15-rifles\/?utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">AR rifle<\/a> that fires the .223 cartridge? It just happens to be .219 inches, which translates to just about 5.56mm when you convert it to millimeters. And the groove diameter of the same rifle barrel is .223 inches. So now you know where 5.56 and .223 figures come from.<\/p>\n<p>If you look at the bullet specifications of a .223 cartridge, the diameter of the bullet is specified as slightly larger than the groove diameter of the barrel. In fact, the diameter of the bullet is specified as .224 inches (or 5.70 mm in). Next, look at the actual dimensions of the two cartridges as specified by C.I.P standards.<\/p>\n<p>First, we have the specifications for a .223 cartridge: The dimensions of this cartridge are specified in mm. In the included image, we can easily compare it to the next image, which happens to show the specifications of a 5.56x45mm cartridge per the C.I.P standards. As you can see, the external dimensions of the two cartridges are almost identical. In particular, note the diameter of the bullet (marked in both images as \u2300, G1), which happens to be 5.70 mm and translates to .224 inches.<\/p>\n<p>In engineering drawings, the convention is to use the diameter symbol \u2300 to denote the diameter of the object at that location. From the included images, you\u2019ll note that not only are the bullet diameters identical, so are the external dimensions of most of the other parts of the two cartridges as well. The differences between the two have to do with the internal dimensions. It is that case-thickness difference that effects the pressures generated, causing them to potentially be unsafe.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"561\" alt=\"Colt A2 Sporter Lower receiver marked for the .223 Remington\" class=\"wp-image-89682 jetpack-lazy-image\" data-recalc-dims=\"1\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?resize=300%2C263&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?resize=150%2C131&amp;ssl=1 150w\" data-lazy-sizes=\"(max-width: 640px) 100vw, 640px\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?resize=640%2C561&amp;is-pending-load=1#038;ssl=1\"\/><noscript><img decoding=\"async\" loading=\"lazy\" width=\"640\" height=\"561\" src=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?resize=640%2C561&amp;ssl=1\" alt=\"Colt A2 Sporter Lower receiver marked for the .223 Remington\" class=\"wp-image-89682\" srcset=\"https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?resize=300%2C263&amp;ssl=1 300w, https:\/\/i0.wp.com\/blog.cheaperthandirt.com\/wp-content\/uploads\/2023\/08\/Correct-ammo-7.jpg?resize=150%2C131&amp;ssl=1 150w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" data-recalc-dims=\"1\"\/><\/noscript><figcaption>This is a Colt A2 Sporter Lower receiver marked for the .223 Remington. Do not be deceived. The upper receiver and barrel are from Rock River Arms and have a Wylde Chamber that will fire 5.56 NATO and .223 Remington safely in this rifle.<\/figcaption><\/figure>\n<\/div>\n<h2>Final Thoughts<\/h2>\n<p>I hope this reemphasizes the reason that you must always be aware of the caliber your <a href=\"https:\/\/www.cheaperthandirt.com\/firearms\/?utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">firearm<\/a> is chambered for and check to be sure of what you are loading in it by checking the head stamp. The reason for this dissertation comes from my own experience. Many years ago, when I was young and took things for granted, I was not always as careful as I should have been. I was at the Angeles Shooting Ranges testing a variety of loads for four different rifles that included a .222 Remington, .22-250 Remington, .243 Winchester, and .25\/06 Remington.<\/p>\n<p>In my laziness, I left all the boxes of ammo on the bench. Without realizing it, during a brief distraction, I chambered a .22-250 round in the .243 Win. When the trigger was pressed, and the rifle fired, it had a funny hollow sound without any recoil. Not until I opened the bolt, and found a somewhat deformed (not quite fire formed) .22-250 case, did I realize my error.<\/p>\n<p>I was much more conscious and aware of my bench technique going forward. I\u2019ve never had anything but the correct <a href=\"https:\/\/www.cheaperthandirt.com\/ammunition\/?utm_source=blog.cheaperthandirt&amp;utm_medium=referral&amp;utm_campaign=ammo-what-you-want-vs-what-you-have\" target=\"_blank\" rel=\"noreferrer noopener\">ammunition<\/a> for the firearm on the bench since that experience. Fortunately, that misadventure did not affect the accuracy of that very fine .243 \u2014 or the shooter\u2026<\/p>\n<h4><strong>Have you ever gotten the wrong ammo? What caliber confusion was it? Did anything go wrong? Share your experience in the comments.<\/strong><\/h4>\n<p><span id=\"tve_leads_end_content\" style=\"display: block; visibility: hidden; border: 1px solid transparent;\"\/><!-- AI CONTENT END 1 -->\n\t<\/div>\n<p><br \/>\n<br \/><a href=\"https:\/\/blog.cheaperthandirt.com\/ammo-what-you-want-vs-what-you-have\/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=ammo-what-you-want-vs-what-you-have\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>New shooters should be aware of this. Old hands sometimes take this for granted. What are we talking about? Always being sure of your ammunition caliber and type before loading your firearm. It sounds simple and rather common sense, yet shooter\u2019s fail. In today\u2019s world of firearms and ammo shortages, with the vast array of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1166,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1165","post","type-post","status-publish","format-standard","has-post-thumbnail","category-gun-news"],"_links":{"self":[{"href":"https:\/\/guncoupons.net\/index.php?rest_route=\/wp\/v2\/posts\/1165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guncoupons.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/guncoupons.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/guncoupons.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/guncoupons.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1165"}],"version-history":[{"count":0,"href":"https:\/\/guncoupons.net\/index.php?rest_route=\/wp\/v2\/posts\/1165\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guncoupons.net\/index.php?rest_route=\/wp\/v2\/media\/1166"}],"wp:attachment":[{"href":"https:\/\/guncoupons.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/guncoupons.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/guncoupons.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}