{"id":4910,"date":"2020-01-29T10:16:59","date_gmt":"2020-01-29T10:16:59","guid":{"rendered":"https:\/\/www.ammunitiontogo.com\/lodge\/?p=4910"},"modified":"2025-10-01T20:08:22","modified_gmt":"2025-10-01T20:08:22","slug":"m855-vs-m193","status":"publish","type":"post","link":"https:\/\/www.ammunitiontogo.com\/lodge\/m855-vs-m193\/","title":{"rendered":"Green Tip M855 vs M193 Ammo"},"content":{"rendered":"<p>The two most common rounds used in weapons chambered in 5.56x45mm NATO are M193 and M855. But what do these two designations mean? Is one better than the other?\u00a0Let\u2019s take a closer look at the differences between M855 vs M193 ammo\u00a0and why you might choose one over the other.<\/p>\n<h2>M855 vs M193<\/h2>\n\n<table id=\"tablepress-397\" class=\"tablepress tablepress-id-397\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Attribute<\/th><th class=\"column-2\">M855<\/th><th class=\"column-3\">M193<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">Bullet Weight<\/td><td class=\"column-2\">62 Grain<\/td><td class=\"column-3\">55 Grain<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Muzzle Velocity<\/td><td class=\"column-2\">3,000 fps<\/td><td class=\"column-3\">3,250 fps<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">Muzzle Energy<\/td><td class=\"column-2\">1,325 ft-lbs<\/td><td class=\"column-3\">1,294 ft-lbs<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">Bullet Drop at 300 Yards<\/td><td class=\"column-2\">-11.6<\/td><td class=\"column-3\">-11.3<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Use Case<\/td><td class=\"column-2\">Light Barrier Penetration<\/td><td class=\"column-3\">Hunting, Soft Targets<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">Relative Cost<\/td><td class=\"column-2\">About 10% More<\/td><td class=\"column-3\">About 10% Less<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-397 from cache -->\n<p>M855 &#8220;green tip&#8221; ammo features a 62-grain, mil-spec &#8220;penetrator&#8221; bullet designed for better long distance performance and penetration of light barriers. M193 is a slightly lighter, 55 grain projectile. M193 rounds are typically faster than M855 loads by about 10%.<\/p>\n<div class=\"mc-shortcode\">\n    <div class=\"mc-shortcode__carousel\">\n                                                <div class=\"mc-shortcode__col\"  data-bannerIndex=\"1\">\n                <a href=\"http:\/\/www.ammunitiontogo.com\/20rds-556-nato-pmc-xtac-62gr-green-tip-light-armor-piercing-ammo?utm_source=Blog&utm_medium=product_carousel&utm_campaign=post&utm_content=m855-vs-m193\" target=\"_blank\" class=\"mc-shortcode__container\" onmouseout=\"handleShortCodeProductOut(event);\" onmouseover=\"handleShortCodeProductOver(event);\">\n                    <div class=\"mc-shortcode__product\">\n                        <div class=\"mc-shortcode__product-content\">\n                            <div class=\"mc-shortcode__product-contanier\">\n                                <div class=\"mc-shortcode__product-image\">\n                                    <img decoding=\"async\" src=\"https:\/\/static-cdn.ammunitiontogo.com\/pimages\/image\/512x\/e0266470459c8672771a1cb2d1bebeb3\/2\/d\/2d1a8c7de34d7d6492d302b3a3d65dc2_4.jpg\" width=\"70\" height=\"70\" alt=\"product\" \/>\n                                <\/div>\n                                <div class=\"mc-shortcode__product-content-price\">\n                                                                            <div class=\"mc-shortcode__product-content-price-final\">\n                                            $14.95                                        <\/div>\n                                                                    <\/div>\n                            <\/div>\n                            <div class=\"mc-shortcode__product-content-logo\">\n                                <img decoding=\"async\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/themes\/atg\/assets\/img\/mc-logo-gray.svg\" alt=\"logo\" width=\"44\" height=\"40\" \/>\n                            <\/div>\n                        <\/div>\n                        <div class=\"mc-shortcode__product-title\">\n                            20rds \u2013 5.56x45 PMC X-TAC 62gr. FMJ M855 Ammo                        <\/div>\n                    <\/div>\n                <\/a>\n            <\/div>\n                                        <div class=\"mc-shortcode__col\"  data-bannerIndex=\"2\">\n                <a href=\"http:\/\/www.ammunitiontogo.com\/1000rds-556-pmc-xtac-55gr-xp193-full-metal-jacket-ammo?utm_source=Blog&utm_medium=product_carousel&utm_campaign=post&utm_content=m855-vs-m193\" target=\"_blank\" class=\"mc-shortcode__container\" onmouseout=\"handleShortCodeProductOut(event);\" onmouseover=\"handleShortCodeProductOver(event);\">\n                    <div class=\"mc-shortcode__product\">\n                        <div class=\"mc-shortcode__product-content\">\n                            <div class=\"mc-shortcode__product-contanier\">\n                                <div class=\"mc-shortcode__product-image\">\n                                    <img decoding=\"async\" src=\"https:\/\/static-cdn.ammunitiontogo.com\/pimages\/image\/512x\/e0266470459c8672771a1cb2d1bebeb3\/0\/e\/0e4e04ae853885f78da581939c589291_4.jpg\" width=\"70\" height=\"70\" alt=\"product\" \/>\n                                <\/div>\n                                <div class=\"mc-shortcode__product-content-price\">\n                                                                            <div class=\"mc-shortcode__product-content-price-final\">\n                                            $504.95                                        <\/div>\n                                                                    <\/div>\n                            <\/div>\n                            <div class=\"mc-shortcode__product-content-logo\">\n                                <img decoding=\"async\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/themes\/atg\/assets\/img\/mc-logo-gray.svg\" alt=\"logo\" width=\"44\" height=\"40\" \/>\n                            <\/div>\n                        <\/div>\n                        <div class=\"mc-shortcode__product-title\">\n                            1000rds \u2013 5.56x45 PMC X-TAC 55gr. FMJBT Ammo                        <\/div>\n                    <\/div>\n                <\/a>\n            <\/div>\n                    <\/div>\n    <div class=\"mc-shortcode__pagination\">\n        <div class=\"mc-shortcode__nav-left\" onClick=\"handleMcGetPreviousSlides(event);\">\n            <img decoding=\"async\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/themes\/atg\/assets\/img\/mc-arrow-left.svg\" alt=\"left icon\" width=\"16\" height=\"12\">\n        <\/div>\n        <div class=\"mc-shortcode__nav-steps\">\n                                                                        <div class=\"mc-shortcode__nav-number mc-shortcode__nav-number--selected\" data-slideIndex=\"2\" onClick=\"handleMcGetSlidesByIndex(event);\">\n                    1                <\/div>\n                    <\/div>\n        <div class=\"mc-shortcode__nav-right \" onClick=\"handleMcGetNextSlides(event);\">\n            <img decoding=\"async\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/themes\/atg\/assets\/img\/mc-arrow-right.svg\" alt=\"right icon\" width=\"16\" height=\"12\">\n        <\/div>\n    <\/div>\n<\/div>\n<h3>Civilians and Mil-Spec Ammunition<\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-5306\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Shooting-M855.jpg\" alt=\"Shooting m855 with an ar-15 at the range\" width=\"2000\" height=\"1208\" srcset=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Shooting-M855.jpg 2000w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Shooting-M855-300x181.jpg 300w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Shooting-M855-1024x618.jpg 1024w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Shooting-M855-1536x928.jpg 1536w\" sizes=\"(max-width: 2000px) 100vw, 2000px\" \/><\/p>\n<p>Technically, both the M193 and M855 are military cartridges. Like most military surplus supplies, there are strict rules around civilian ownership of M193 and M855 ammunition. However, the average Joe can get his hands on loads nearly identical to this military ammo, even though that ammo may not be actual \u201cmil-spec.\u201d Some of these loads are even manufactured on the same lines that make ammo for the military at <a href=\"https:\/\/www.jmc.army.mil\/Installations.aspx?id=LakeCity\">Lake City&#8217;s Army Ammunition Plant<\/a>.<\/p>\n<p>If you\u2019re getting your <a href=\"https:\/\/www.ammunitiontogo.com\/index.php\/cName\/rifle-ammo-223-556\">5.56 ammo<\/a> from Federal\/American Eagle, they have a commercial alternative designated XM.<\/p>\n<p>The X in front of M193 and M855 simply indicates these rounds are produced for civilian use. To confuse things, some manufacturers (like PMC) use the M193 and M855 designations. However, this ammunition isn\u2019t <em>technically<\/em> military standard.<\/p>\n<h2>What is M193?<\/h2>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-5149 size-full\" title=\"Hornady M193 ammo\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Hornady-M193-ammo.jpg\" alt=\"hornady m193 on a table\" width=\"1500\" height=\"804\" srcset=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Hornady-M193-ammo.jpg 1500w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Hornady-M193-ammo-300x161.jpg 300w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/Hornady-M193-ammo-1024x549.jpg 1024w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><br \/>\nDeveloped in the early 1960s, M193 5.56 cartridges first saw combat in Vietnam, where they were used in the then relatively new M16 rifle. Formally adopted in 1964, M193 was the primary round used in military M16s until the 1980s. (This was when the M855 \u201cgreen tip\u201d cartridge was standardized according to a NATO agreement.)<\/p>\n<p>The M193 cartridge (and its civilian equivalents) drive a <a href=\"https:\/\/www.ammunitiontogo.com\/lodge\/what-is-a-boat-tail-bullet\/\">boat tail projectile<\/a> with a lead core and a full copper jacket. Weighing in at 55 grains, the FMJ bullet travels approximately 3,165 feet per second out of the muzzle. Like most military ammo, M193 5.56 cartridges are chemically sealed at the primer and case mouth for extra moisture resistance.<\/p>\n<p>Vietnam era M16s had a relatively slow <a href=\"https:\/\/www.ammunitiontogo.com\/lodge\/twist-rate\/\">twist rate<\/a> of 1:12. This proved effective for the short 55 grain bullets featured in M193 ammo. When used in rifles with a slower twist rate, like the early M16 (think 1:9 or slower), these loads are capable of pretty honorable accuracy. However, the projectile sheds velocity faster than a Golden Retriever sheds hair on the living room carpet. This can make accuracy problematic at longer ranges.<\/p>\n<h4>M193 Ammo on Target<\/h4>\n<p>Although M193 is an FMJ round, it often fragments inside soft tissue, creating a considerable wound. However, when it fails to fragment, M193 FMJs produce only minimal wounds. Unfortunately, fragmentation is anything but consistent with these loads.<\/p>\n<p>Plenty of Vietnam era military personnel complained about the M193, claiming it had no significant effects on the enemies it hit. M193 also performs poorly when it comes to barrier penetration. These rounds seem to have a hard time punching through window panes, heavy clothing, and sometimes even vegetation (which proved problematic in the jungles of Southeast Asia).<\/p>\n<h2>What is M855?<\/h2>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-5150\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/two-boxes-of-m855-ammo.jpg\" alt=\"PMC and Federal M855 ammo on a table\" width=\"1500\" height=\"732\" srcset=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/two-boxes-of-m855-ammo.jpg 1500w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/two-boxes-of-m855-ammo-300x146.jpg 300w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/two-boxes-of-m855-ammo-1024x500.jpg 1024w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/p>\n<p>M855 is often called \u201cgreen tip\u201d ammo for its special color coding (the full metal jacket is painted green at the nose). These 5.56 cartridges push a 62 grain projectile designed with a boat tail, lead core, and a special steel \u201cpenetrator\u201d tip. The specified muzzle velocity of M855 ammo is roughly 3,020 feet per second. The primer and case mouth are chemically sealed, just like M193 ammunition.<\/p>\n<p>The bullet loaded in M855 differs significantly from M193 and other standard FMJs. These \u201cpenetrator\u201d projectiles were specifically engineered to improve long-range performance in the Belgian Minimi and American M249 SAW. The design was also intended to improve penetration (especially the penetration of Russian helmets) over its predecessor, the M193. In that regard, it definitely delivers. M855 has served as the standard ball ammunition of the United States and other NATO countries since 1982.<\/p>\n<h4>M855 on Target<\/h4>\n<p>Although <a href=\"https:\/\/www.ammunitiontogo.com\/product_info.php\/pName\/1000rds-556-lake-city-m855-62gr-penetrator-ammo\">M855 ammo<\/a> is not armor piercing ammunition, the steel \u201cpenetrator\u201d at the tip of the core helps it punch through barriers pretty effectively. It penetrates glass, thin metals, thick clothing, and brush rather well. However, don\u2019t expect M855 rounds to plow through auto glass, brick, or modern body armor. That isn\u2019t what it\u2019s designed to do.<\/p>\n<p>Because M855 ammo penetrates so well, it can wreak havoc on steel targets and protective backdrops. Some ranges restrict its use, so be sure to check the rules at your local gun club before you use it.<\/p>\n<p>When it comes to performance on soft targets, M855 leaves a lot to be desired. The same characteristics that allow its &#8220;penetrator&#8221; projectile to punch through barriers, also make it more likely to pass straight through a soft target without causing any significant tissue damage. The M193 does a better job here, although its performance in soft tissue is anything but predictable.<\/p>\n<p>That special steel \u201cpenetrator\u201d makes the M855 projectile pretty long for its weight. It is even longer than some 69 grain FMJs. This extra length requires a faster twist rate for proper in-flight stabilization. For this reason, M855 performs well in barrels with a 1:7 or 1:8 twist. (Keep in mind I\u2019m speaking broadly here. Calculating the optimal spin rate of a specific projectile is well beyond my mathematical capabilities.)<\/p>\n<p>When it comes to accuracy, M855 ammo is definitely capable, but don\u2019t expect match grade performance. It does have a slight edge over M193 at longer ranges thanks to its improved ballistic coefficient.<\/p>\n<h2>Which is Better: M855 vs M193?<\/h2>\n<p>Like most things in the world of ammunition, that depends.<\/p>\n<h4>When to Choose M855<\/h4>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-5151 size-full\" title=\"single cartridge of green tip M855 ammo\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M855-single-cartridge.jpg\" alt=\"Single cartridge of M855 ammunition on a table\" width=\"1500\" height=\"439\" srcset=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M855-single-cartridge.jpg 1500w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M855-single-cartridge-300x88.jpg 300w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M855-single-cartridge-1024x300.jpg 1024w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/p>\n<p>If you\u2019re shooting a rifle with a fast twist rate (1:7 or 1:8), choose M855 \u201cgreen tip\u201d ammo.<\/p>\n<p>When trying to poke holes through intermediate hard barriers, M855 \u201cgreen tip\u201d is the way to go.<\/p>\n<h4>When to Choose M193<\/h4>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-5148 size-full\" title=\"single cartridge of M193 ammo\" src=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M193-single-cartridge.jpg\" alt=\"Single cartridge of M193 ammo\" width=\"1500\" height=\"523\" srcset=\"https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M193-single-cartridge.jpg 1500w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M193-single-cartridge-300x105.jpg 300w, https:\/\/www.ammunitiontogo.com\/lodge\/wp-content\/uploads\/M193-single-cartridge-1024x357.jpg 1024w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/><\/p>\n<p>If your rifle has a slower twist rate (1:9, 1:10, or 1:12), M193 may give you better results.<\/p>\n<p>M193 is more effective on soft targets that aren\u2019t hiding behind a barrier, especially targets closer than 100 yards.<\/p>\n<p>However, if you\u2019re looking for a personal protection round, neither is a fantastic choice. Civilians are not as restricted as the military when it comes to what type of projectiles we can use. While it will work in a pinch, an FMJ with or without a green penetrator tip is not the best choice for self-defense. When self-defense is the goal, choose ammunition with projectiles that open up on impact and won\u2019t pass straight through your target.<\/p>\n<h2>In Conclusion<\/h2>\n<p>Neither M855 nor M193 is going to provide solid gold performance. However, both of these cartridges are affordable, readily available, and consistent enough to make most shooters happy. If you simply consider them a general purpose load, you can understand why these 5.56 NATO cartridges are so popular among modern shooters.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A side-by-side look at M855 vs. M193 ammunition. What is the difference and which is better for your needs?<\/p>\n","protected":false},"author":12,"featured_media":5147,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[170,186,188,187],"class_list":["post-4910","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ammo-topics","tag-5-56-nato","tag-green-tip-ammo","tag-m193","tag-m855"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>M855 vs M193 Ammo - What&#039;s Best for You?<\/title>\n<meta name=\"description\" content=\"A side-by-side look at M855 vs M193. What separates the green tip 5.56x45 ammo from the 55 grain round which is best for your shooting needs?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ammunitiontogo.com\/lodge\/m855-vs-m193\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M855 vs M193 Ammo - What&#039;s Best for You?\" \/>\n<meta property=\"og:description\" content=\"A side-by-side look at M855 vs M193. 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Look for tips for the range here.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.ammunitiontogo.com\/lodge\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.ammunitiontogo.com\/lodge\/#\/schema\/person\/f48aad7ac301e374f881101d36ad6e2e\",\"name\":\"Alice Jones Webb\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.ammunitiontogo.com\/lodge\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/2e3fa0ef78bf4b6554da0d5a952e40e8269f92a99d6c4892ef577f38e9c51dfc?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/2e3fa0ef78bf4b6554da0d5a952e40e8269f92a99d6c4892ef577f38e9c51dfc?s=96&d=mm&r=g\",\"caption\":\"Alice Jones Webb\"},\"description\":\"Alice Jones Webb is a writer, long-time hunter, experienced shooter, and mother of 4 up-and-coming outdoor enthusiasts. 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