| The longer more streamlined projectiles used in typical 5. AR500 Armor body armor is Stand-Alone and Multi-Hit capable. The main benefit of M855 is slightly greater penetration of hard surfaces (combloc helmets). Visit our bullet shop page for the entire Bobs’ Bullets product line. 45x39 ammunition ballistics Chart. 8SPC out of an AR15? The barrel and bolt are specific to 6. If the ammunition is packaged as M193, M855, SS109 (or a variant of those like XM193 or XM855), it is definitely 5. 06 Multi-Hit Capability will defeat M193 5. 56 x 45 Trajectory Charts for M193 and M855 ammo within the Reloading forums, part of the Firearm Forum category; Can anyone point me to trajectory charts for the 5. M193 ammo is a U. Our online store stocks. 62 x 39 Mild Steel Core 7. These military projectiles show larger variations in hardness, dimensions, and weight tolerances, likely leading to greater variations in barrel friction and muzzle velocity and likely introducing confounding factors,. 45mm is designed to tumble in the body. Ammunition type: 5. 56x45 reliably fragment?. Purchasing page for Prvi Partizan Ammunition line includes pistol, rifle and military ammo in 9mm, 40 S&W, 45 ACP, 5. Below those two numbers you have a less than 75% chance you will get the round to fragment in it's intended target. He will have to hold at the base of the 50 and 100 meter pop-ups to achieve a solid hit,other than those 2 aim center mass. I know for a fact that the US has measurements of it's increased performance of M855 vs RHA over M193. GOODBYE GREENTIP? ATF Seeks To Ban Common SS109/M855 5. M855 has much worse fragmenting abilities than M193. The plate also stopped 147gr FMJ. This requirement made the SS109 (M855) round less capable of fragmentation than the M193 and was considered more humane. OTOH, all rifles have preferences as to what shoots best from them, and in your case it just might like the 55 gr stuff better. 56mm alternative. Lake City AAP ( LC 92 ) M193. 56 NATO ammunition out of my 16″ mid-length AR-15. Experiments with longer length barrels up to 610 mm (24. And M855 lost velocity vs the M16A1 loader with M193 back in the day. Going strictly by the anecdotal evidence forwarded by some of the terminal effectiveness of 45 ACP handguns, the 223 Remington rifle will offer terminal ballistic advantages over and above this out to 325 yards. 56, but this discussion focuses on the two most popular cartridges, the. M193 vs M855. I ordered the 45% IPSC targets because SoCal Targetworks had them for a. M855 is an American designation for NATO 5. No formal velocity tests were done on any 55 grain loads. Temperature Temperature affects our shooting in several different ways:. Military surgeons all over the world have asked the United Nations to ban small caliber high-velocity rounds in combat — including the 5. This isn't much higher than the fragmentation velocity. Manufactured to the exacting specifications required by such organizations and demanded by our customers, X-TAC™ is the choice for the professional and enthusiast alike. (All shipboard MK 18s should have H buffers as this was the standard at the time of assembly. This company offers unbeatable quality and consistent results for any high-volume shooter or hunter. It also has much-improved penetration characteristics over the old M193 55-grain projectile at all ranges, resulting in higher retained velocity and greater accuracy at long range. 56 NATO is saying the same thing in common parlance. It works for both rifles and carbines due to the offsetting influence of higher muzzle velocity in the rifle being offset by the longer sight radius that moves bullet strike less per click. 308 Winchester) at velocities up to 2,850 feet per second. 56x45 mm M855 62 grain "green tip" penetrator at 3200 fps; We designed the Bravo Shield™ to be the toughest hand-carried shield available!. 56mm M855 round to replace the M193 in an effort to achieve better performance at longer ranges with the M249 Squad Automatic Weapon (SAW). 62 x 51 M80 Ball 5. M193 used to be the standard round used by the military, but is has been replaced with the 62gr M855 as the standard round. The Hesco plates are legit. M855 — or "Green Tip" — ammo was designed for battles with a body-armor-equipped army, hence the name. barrel and M855 Ball Semi-AP ammo means you get a high-velocity icepick that loses kinetic energy and thus has considerably reduced terminal ballistics even lower than that of an M16A2 using the same M855 round, which that even still is about inferior to that of the old. 5 Inch Barrel For bulk and cheap, I would choose M193 (vs 855). The tougher M855 is less inclined to fragment than the M193. Curious what all the "M"s and "X"s means? Simple: The "M" in M193 and M855 stands for "military". 56×45mm NATO (official NATO nomenclature 5. 25" M85 barrel over the 16" AR15 barrel in common loads. 56 mm round is quite another matter, and the casualty will be a long time in rehab. Also, there is variation on that number from lot to lot of ammo as well as variation between individual rifles. 56mm M855 round to replace the M193 in an effort to achieve better performance at longer ranges with the M249 Squad Automatic Weapon (SAW). A steel penetrator in the front end of the M855 provides increased hard-target performance. 56 Ammunition The key difference is velocity, Both lead-core M193 and steel core SS109/M855 easily penetrate all police soft body. This is a M193 Load. The US used M193 in the 1970's. and back up to about 40 yards for the M193 shot to bring the velocity BELOW the 3300 fps rating. The M193 exits the barrel faster and fragments at a slightly lower velocity. 56mm has that same energy at point-blank ranges only. 5 Grendel builds, 9MM, Rifles, Pistols, and 1911. Because of the widespread use of the M16 and other rifles intended for use with the 3. 56×45 M855/SS109, and 7. The M193 and M196 cartridge for the M16 can be fired with the M249, but accuracy is degraded; therefore, it should only be used in emergency situations when M855 or M856 ammunition is not. However, if. 56x45mm NATO, the difference being that the 5. 56 NATO is for fragmentation, but if it isn't, then thy could actually be comparable at longer ranges (and the fact the 5. Since the 6. AR-15 zero graphics - Various barrel lengths and zero ranges - M193, M855, and M The graphics show points of impact for a given zero using various common barrel length and popular ammunition combinations. Magtech/CBC 5. 56×45mm 55-grain [3. This round was designed and released in 19. Lead isn't listed in the metals above. The primer and case mouth are chemically sealed, just like M193 ammunition. It has pretty decent terminal ballistics and supposedly fragments all the way down to 1900 FPS do to its length and somewhat fragile design. Black hills uses the same bullet the 262 load uses, but pretty much any of the premium bullets on the market today, will offer much improved terminal ballistics. 56 NATO LAKE CITY 62 GRAIN M855 FULL METAL JACKET (1000 ROUNDS) This loose-packed case of 5. The M193 round is the standard cartridge for field use with the M16A1 rifle and has no identifying marks. Because of the widespread use of the M16 and other rifles intended for use with the 3. The heavier M855 62gr FMJBT was NATO's choice because the steel tip, heavier projectile was less likely to fragment. So what do you predict?. For the M855 bullet and the M193 bullet the R squared is often lower than 1 illustrating that the data points do not always fall on the curve, due to a zone of mixed results. Sportsman's Guide has your PMC X-Tac Green Tip,. If armor stops M193 at less than 50 yards it will stop M855. 5 inch barrel, loses so much velocity that its maximum effective range is 100 to 150 m. 56-mm Ammunition: M855 by Sidra I. Like most military surplus equipment, there are strict rules around civilian ownership of M193 ammunition. M855 is the current load used by the US Military and is identified by green paint on its tip (M855 is often called “green tip”). military's M4 carbine generates considerably less initial velocity than the longer 20" barrel found on the M16, and terminal performance can be a particular problem with the M4. 45 acp round broke the 1. The only problem I've had is recovering the bullets as they usually pass through. The M193 has a better rep for fragmentation, however with the shorter barrels, that fragmentation velocity threshold will limit your range. Use the key phrases and pics as steerage and notion to your articles, blog posts or marketing campaigns with numerous on-line compaines. M855 will produces 3,150 ft/s from the 20″ barrel of an M16A2 Rifle. These have a steel rod embedded inside the round itself. 56mm M855 has a green bullet tip. 8 at about $1 a round, hard to find, no military surplus and very little selection of available ammo where you can find it. This is a discussion on Ammo to avoid AR-15 1:9 twist within the Ammo Dump forums, part of the Firearm Forum category; I am newbie to rifles bought first AR-15 last xmas I have been trying to get ammo when I can find it. Since the bullet will be losing speed every moment after it leaves the barrel, we can figure out it's going to drop below the magic velocity threshold around 20 meters. 56x45mm are M193 and M855 equivalent rounds. Rifleshooter. I get the difference is FPS. 56×45mm NATO inspired an international tendency towards relatively small sized, light weight, high velocity military service cartridges that produce relatively low bolt thrust. Calculate a trajectory from bullet, velocity, firearm and atmospheric parameters. M855 probably does the job if shot placement is adequate. 5 are ranging between 25fps and 90fps. Back in the early days of sniper development and use for the law enforcement community the 223 Rem was fairly popular because of the fear of over penetration from the 308 Win as well as some other concerns and considerations. It will a produce a line graph showing the bullet drop and flight path of the bullet. In theory I'm good at 100m, with even a 14. Here is the chart. Why not M193/M855?. 56 NATO ammo will have a NATO stamp on the base. Login Register. The M855 ammunition is optimized for a 20-inch barrel with a 1:7 twist barrel. Since we started shortening barrel length for the M4/m16 the fragmentation range has gone down greatly, and with the advent of m855 ammo (that doesn't reliably fragment at all. barrel and M855 Ball Semi-AP ammo means you get a high-velocity icepick that loses kinetic energy and thus has considerably reduced terminal ballistics even lower than that of an M16A2 using the same M855 round, which that even still is about inferior to that of the old. At 600 yards it has the same energy as a 7. Which is less likely to dimple the steel at that range? Green tip has the steel penetrator, but M193 has higher velocity. Winchester 5. PMC is gaining popularity in the US market and has now come out with their own 5. " How the Test Was Done. XM193 vs XM855 for Bug Out Military Weapons Forum and the bullet requires high velocity to do its damage. Read the rest of this awesome piece here. News AFEMS. The hollow nose cone breaks off and often the bullet fragments at the cannelure. I got some 30 round boxes of ZQI 5. three things happened at once which are all interrelated. The lean M536 provides a fast, clear aiming point in all light conditions and battlefield scenarios. SHIPS FREE Orders must have $49 of Free Shipping products to qualify for shipping discount. 56 round's primary wounding capability is fragmentation driving by velocity. Army Yuma Proving Grounds (YPG) made special arrangements with a group of forensic firearms examiners from Arizona and California to utilize a tracking Doppler radar system for a wide variety of exterior ballistic projects. Unlike most FMJ rounds, M193 and M855's primary wounding mechanism is fragmentation. 8SPC out of an AR15? The barrel and bolt are specific to 6. 56 NATO is hard to stop because of its high velocity (930 M/S). The specified muzzle velocity of M855 ammo is roughly 3,020 feet per second. 5 Inch Barrel For bulk and cheap, I would choose M193 (vs 855). Both M855 and M193 ammo are widely available to sportsman as well. 223 Rem, AR-15s chambered for the NATO 5. 62mm M43 at 275 yards, M193 at 250 yards and M855 at 375 yards. It took rifles to stop them. These have a steel rod embedded inside the round itself. Capable of defeating higher level rifle threats, Level III+ armor offers enhanced ballistic protection against 5. 223 Remington (Hodgdon CFE 223 Data) reloading data with 26 loads. Muzzle Velocity: 2,900ft/sec (884m/sec) The CQBR Upper Receiver is a drop in replacement for the M4A1 standard upper receiver and when installed is known as the Mk18 by type-designation. Although the SD of the ammunition remained low enough, the ES jumped to over 80 – more than double that of the XP193. 56×45mm NATO with a military designation of SS109 in NATO and M855 in the U. We tested M855 vs M193 against a new AR500 plate. Karl and Ian claim the extra lethality of M855A1 is due to it's increased velocity, which is patently not the case. The catch there is muzzle velocity. 56 NATO Ball M193 penetrates steel far better than 7. The M193 has a better rep for fragmentation, however with the shorter barrels, that fragmentation velocity threshold will limit your range. M855/M193 Explained. 62x39 Type PS used in the AK do not produce terribly severe wounds, but rather like those resembling lower velocity pistol rounds like the 9x19 Parabellum. 223 - What You Know May Be Wrong steel penetrator FMJ SS109/M855, which is currently used by the military, although it has begun to be supplanted by. M855 Vs M193 out of an 11. Velocity Systems Phalanx VS-PBZ Ballistic Rifle Plate Specs (from the Vecity Systems website: "Model Number: VS-PBZ. It has pretty decent terminal ballistics and supposedly fragments all the way down to 1900 FPS do to its length and somewhat fragile design. — If you get a chance to shoot some of the M855A1 through your agency, the new round is claimed to shoot flatter than the XM855. 56mm center-fire ammunition is issued in the form of a complete round, A complete round (cartridge) consists of all the components (cartridge case, bullet or shot, propellant powder, and primer) necessary to fire the weapon once. 56×45mm NATO inspired an international tendency towards relatively small sized, light weight, high velocity military service cartridges that produce relatively low bolt thrust and free recoil impulse, favoring. I recently saw that 5. 224 inches) in diameter, and is best fired in a barrel with a 1:8 rifling twist; however, most rifles use either a 1. Because the steel penetrator increases the length and changes the weight distribution of the SS109 bullet, it is suitable for use only in barrels with a twist of one turn in nine inches or faster. I think the answer is either "they both suck" or "use whats cheapest". Inside that range, the M193 will out penetrate the M855. 308 Winchester) at velocities up to 2,850 feet per second. The specified muzzle velocity of M855 ammo is roughly 3,020 feet per second. For HD or general use ammo, it is what you really want to stock up on. Cartridge, 5. An oversized, 36 mm objective lens gathers more light for a brighter image, 5x magnification puts rounds on target out to 700 meters, and the 10-setting illuminated reticle lets you instantly transition from close. Close and medium range engagements require lightweight, quick-to-point sights. 223 Remington / 5. This information is where the metal meets the meat. 62gr XM855 vs 77gr SMK vs 55gr FMJ. This American Eagle 5. It is derived from, but not identical to, the. 56 NATO is saying the same thing in common parlance. If you're looking to buy body armor with advanced rifle-rated threat protection at a budget-friendly price, AR550 body armor plates may be your best bet. At 600 yards it has the same energy as a 7. Projectile is a 55 grain non magnetic FMJBT. The big take away from that test is that M855 did not penetrate the armor, while M193 did. 56 mm round is quite another matter, and the casualty will be a long time in rehab. Initial velocity is lower, but the better ballistic coefficient more than makes up for this. Because of the widespread use of the M16 and other rifles intended for use with the 3. The advertised maximum effective range of both the M14 with a 150 gr. Combat operations the past few months have again highlighted terminal performance deficiencies with 5. For greatest effects we recommend simply. 56 (M193, M855, or Mk262) suffer between a 14. It’s valid with any ammunition that approaches the specs for M193 (55gr) or M855 (62g) Ball ammunition. 56mm M16 rifle in 1967; it fired the M193, the first 5. By 200 meters, the M193 bullet is travelling slower than the M855 bullet and is losing velocity a lot faster. 56x45mm Q3131 M193 55 Grain Full Metal Jacket 20 Rounds. M193 ammo is a U. M855 has much worse fragmenting abilities than M193. 62x51mm Fully Add to Cart Battle Steel Level III+ Ballistic Plates M855 5. While actual USGI M193 and M855 is technically not available to the commercial market, commercial ammunition manufacturers do produce ammunition to similar specifications of M193 and M855 (at least with regards to muzzle velocity and pressure). The Mk 262 is less velocity sensitive, and other non-. The velocity for a 20 round string was 3090 fps. My M193 comment was pretty much M193 vs M855 without the regard for the preferred heavy stuff and I should have made a note of that in my post. The m855 was adopted, the M-16A2 was adopted and the M249SAW was adopted. 56x45mm 62 gr. The OP only listed two choices, M193 or M855 for range use and home defense. 56 NATO PMC M193 55 GRAIN FMJ (20 ROUNDS) This 5. GOODBYE GREENTIP? ATF Seeks To Ban Common SS109/M855 5. 62x51 M80 NATO Ball (. 308, the trajectories will be almost identical. The standard 5. How did your M855 velocity data compare to other sources? The best study I was able to find on this is "Barrel length studies in 5. Second, at ranges closer than 200 yards or so, penetration of M855 against hard materials is inferior to lead-core M193 ball (as I pointed out above), because of M855's lower velocity. Another option would be to have a carbine lower with two uppers. At 600 yards it has the same energy as a 7. Sportsman's Guide has your Magtech, 5. 56mm M855 round to replace the M193 in an effort to achieve better performance at longer ranges with the M249 Squad Automatic Weapon (SAW). Sniper rifles use larger calibres due to accuracy at range rather than stopping power at 300m. Velocities will vary, but generally speaking my findings with 11. Velocity and energy association of the bullet plays a significant role during bullet penetration. Most NATO nations adopted the SS109 as their first 5. The plate is made from new Duritium technology and is specifically designed as a 'special threat' plate to defeat potent ammunition such as the M855 'Green Tip' round. Velocity Systems VS-PBZ Rating: III equivalent (ICW, IIIA backer), plus multi-hit rated for 5. I don't think there's a need to change the 5. New M193 ball Ammo is made to US Military 5. Black hills uses the same bullet the 262 load uses, but pretty much any of the premium bullets on the market today, will offer much improved terminal ballistics. M855 is slightly more expensive than M193. Description. This requirement made the SS109 (M855) round less capable of fragmentation than the M193 and was considered more humane. I have M855 and M193, and some decent 3/8 AR500 torso targets. The Black Hills 223 68-grain heavy match was lost velocity at a fairly consistent rate. 62mm M43 at 275 yards, M193 at 250 yards and M855 at 375 yards. 223 TAP FPD and V-Max rounds by Hornady. Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. 500 Federal XM193 5. This company offers unbeatable quality and consistent results for any high-volume shooter or hunter. M193, which was replaced by M855 can penetrate level III steel body armor, when fired from a 20” barrel at 50 feet or less, due to its relatively high velocity. Use the key phrases and pics as steerage and notion to your articles, blog posts or marketing campaigns with numerous on-line compaines. At below a certain velocity (2700fps or something like that) it will still tumble but isn't going fast enough to fragment. This is closer to a worst-case scenario shot, since the residual velocity of the spall is higher. It is what I carry in my primary self-defense pistol, and it’s what resides in my home defense shotgun. 56 NATO 55 gr FMJ (M193) Frontier ® Item #FR200 | 20/Box American made and built on tradition - these are the hallmarks of Frontier ® Cartridge. This denotes the ammunition is produced to military specifications. These tests were more informal. Because of the steel penetrator in the M855. 56 NATO ammunition, 55-grain FMJ rounds are popular options. Bullet velocity plays a role in penetration but these are well known vulnerabilities. AR550 body armor has a core hardness of approximately 545-560 BHN, which is perfect for defeating higher velocity threats. 56x45 mm M193 55 grain FMJ at 3275 fps; 5. 56, these rounds are considered interchangeable by most shooters, but the truth is they’re not identical. (M193) Velocity Test. I don't want people who can't handle seeing gory images to see the next picture in their feed. 62 mm—as the magazine noted through the years. 56x45mm NATO mil-spec M193 round. M855 "green tip" ammunition was used in the M16A2. What Is Muzzle Velocity? Muzzle velocity is the measure of the speed of a projectile as soon as it leaves the barrel of the firearm. More of 855's energy is due to mass rather than velocity compared to faster m193. GRANT NUMBER. It also has much-improved penetration characteristics over the old M193 55-grain projectile at all ranges, resulting in higher retained velocity and greater accuracy at long range. 56 / 223 M193 CBC / Magtech 1000 Rds in a New M2A1 Ammo Can: 5. This is a discussion on XM193 vs. It is derived from, but not identical to, the. This isn't much higher than the fragmentation velocity. Both M855 and M193 ammo are widely available to sportsman as well. It retains velocity better than the lighter M193 and penetrates better starting around 150 yards. As barrel length increases, the bullet is propelled faster by the expanding gasses in the barrel, imparting more velocity on the bullet, resulting in a longer range before a fired bullet drops below 2700 fps. Daisy Red Ryder typical plainsman bow and arrow -- 500 gr chipped stone point, 150 fps, 25 ftlbs. To my knowledge, saying 5. Like most military surplus equipment, there are strict rules around civilian ownership of M193 ammunition. GOODBYE GREENTIP? ATF Seeks To Ban Common SS109/M855 5. H3 may be needed for an extreme cases or when the gas port is eroded but the barrel still groups. It penetrates less well at short ranges because it is moving slower than M193. 56 mm M193 round and the 7. The velocity was approximately 3,000 fps. range for baseline M855, M855 with 10% higher muzzle velocity, Muzzle velocity, muzzle retardation, and trajectory mismatch for M855 and M193 and. 56x45mm) Ammo collection. This Prvi Partizan 5. May not be a consideration of you are running a SBR. If I remember right, the 55gr projectile fragmented, tumbled, deformed on impact with human tissue and caused horrendous wounds. Lastly, if you’re looking at military 5. m193 vs m855 for shtf, m193 vs. Initial velocity is lower, but the better ballistic coefficient more than makes up for this. Federal offers a pretty complete line; while it doesn't satisfy every niche of my needs, it gets most of them and. The Army does not actually consider M855A1 to be armor piercing ammunition, but it is capable of some really impressive penetration. Ammunition Store offers several variations of this 223 ammo including ballistic tip, full metal jacket, hollow point, soft point, steel core M855, and tracer rounds. 56 g] ball cartridge) was a US NATO standard. military after the Vietnam War. Next, how low can you go on velocity before yaw and fragmentation stops occurring with this class of cartridges?. Threat Level: 7. 56mm M855 Ball Ammunition has a green bullet tip. coupled with 55 grain Nosler Ballistic Tip and Hornady V-Max. M16A2 got 922meters a second with M855 so M4A1 with A1 looses only 12 meters a second vs M16A2 with M855. 56 M855 has a 62 grain projectile. More of 855's energy is due to mass rather than velocity compared to faster m193. There may very well be certain obstacles that M855 can penetrate better but when it comes to actual armor that a real person might wear, that does not appear to be the case. I must say though, M855 is a bad choice for zombies when compared to M193. The yaw combined with a high velocity would cause the bullet to fragment violently in the target, causing severe trauma. 56 NATO, 300 Blackout and 6. ) H2 needed for MK 262/R2LP and will run M193/M855. Velocity drops rapidly as the barrel length decreases, especially below 10 inches where the velocity drops below 2,500 fps. He will have to hold at the base of the 50 and 100 meter pop-ups to achieve a solid hit,other than those 2 aim center mass. Like most military surplus equipment, there are strict rules around civilian ownership of M193 ammunition. 308 Winchester) at velocities up to 2,850 feet per second. The earlier M193 Ball load with its 55 grain FMJ-BT bullet also only fragments at relatively high velocity, and if no fragmentation occurs it is a poor performer, like the M855. Funny, considering 855 green tip penatrators are designs for it, but don't. Cartridge, 5. The plate is made from new Duritium technology and is specifically designed as a 'special threat' plate to defeat potent ammunition such as the M855 'Green Tip' round. PMC is gaining popularity in the US market and has now come out with their own 5. Because with M855 from M4 it’s 866 meters per second vs A1 with 910 meters per second. In hits through the extremities the 5. [ 11 ] The 5. Since 1928, Prvi Partizan has been producing custom ammunition in Serbia for competition, indoor ranges and hunting. The lean M536 provides a fast, clear aiming point in all light conditions and battlefield scenarios. 0704-0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the. These military projectiles show larger variations in hardness, dimensions, and weight tolerances, likely leading to greater variations in barrel friction and muzzle velocity and likely introducing confounding factors,. I have M855 and M193, and some decent 3/8 AR500 torso targets. Also, there is variation on that number from lot to lot of ammo as well as variation between individual rifles. Get the best in quality with Federal XM193 NATO Ammunition - 5. 56mm won’t get through. I must say though, M855 is a bad choice for zombies when compared to M193. Velocity is dependent on barrel length and environmental conditions. John at the expense of increased pressure and decreased velocity, while a longer leade produces increased velocity. Manufacturer's Declaration. Compared to PMC's M193 clone, XP193, the PMC M855 was significantly less consistent. 62x39mm bullets have much greater effectiveness against armor than others. The M193 round is the standard cartridge for field use with the M16A1 rifle and has no identifying marks. The dangers of mixing up 5. Cold Bullets By Lucien C. M193 vs M855. 45 ACP Ammo 230 Grain Bonded Jacketed Hollow Point Magtech. Check with a magnet to be double sure. The M855 is yaw dependent, meaning it depends on the angle upon which it hits the target. Different jacket thickness, different methods of manufacture, more complex construction (like M855) all effect how the bullet acts. Typically m193 should be ok. When a barrel is shorter, the velocity of the bullet will be decreased because less of the propellant will have the opportunity to deflagrate before the pressure in the barrel is released by the bullet exit. M855A1 round against the M855 and the M80 in multiple weapons — the two 5. I say equivalent to describe them because both the M193 and M855 are military cartridges; any loads proclaiming to be the same on the commercial market are either copies, or very similar to those military loads, but not actual "mil-spec" ammo. Nevertheless, the controversy continued over which caliber was better—5. The UMC was used as a control to compare civilian production to military. I have only ever used the m855 since I didn't join up for the first time till '96. The OP only listed two choices, M193 or M855 for range use and home defense. Ideally I need the correct velocity and BC of M855, M855A1, M118LR and might as well throw in Mk262 since we have that as well. M855 typically cannot penetrate that same armor. The bullet loaded in M855 differs significantly from M193 and other standard FMJs. M855 Ball ammunition fired in M16A2 rifle with 300 meter battle sight zero. May not be a consideration of you are running a SBR. THIS IS A BALLISTIC PROTECTION ITEM! TACTICAL ADVANTAGE REQUIRES A COPY OF YOUR MILITARY OR LAW ENFORCEMENT ID FOR VERIFICATION BEFORE SHIPMENT. 56 mm AR15 ammo FMJ 556 M193 22 LR CCI Standard Velocity 500 rds 40gr 1070FPS M856A1 Tracer 5.