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  2. M16 rifle - Wikipedia

    en.wikipedia.org/wiki/M16_rifle

    The 5.56 mm round had to penetrate a standard U.S. helmet at 500 yards (460 meters) and retain a velocity over the speed of sound while matching or exceeding the wounding ability of the .30 carbine cartridge. [50] This request ultimately resulted in the development of a scaled-down version of the Armalite AR-10, named the ArmaLite AR-15. [51]

  3. Tracer ammunition - Wikipedia

    en.wikipedia.org/wiki/Tracer_ammunition

    The M196 tracer cartridge (54-grain bullet) 5.56×45mm NATO was developed for the original M16 rifle and is compatible with the M16A1 barrel also using 1:12 rifling twist. It has a red tip and is designed to trace out to 500 yards, and its trajectory matches the M193 (56-grain) ball cartridge, which has no tip color.

  4. Comparison of the AK-47 and M16 - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_the_AK-47...

    The 5.56mm round had to penetrate a standard U.S. helmet at 500 yards (460 meters) and retain a velocity over the speed of sound while matching or exceeding the wounding ability of the .30 Carbine cartridge. [83] ArmaLite AR-15 with 25-round magazine An M16A1 with 30-round magazine

  5. 5.56×45mm NATO - Wikipedia

    en.wikipedia.org/wiki/5.56×45mm_NATO

    The round also increases accuracy, from 3–5 minute of angle (MOA) with the M855 from an M4A1 barrel to 1.71 MOA at 300 yards and 1.67 MOA at 600 yards from a 14 in (360 mm) SCAR-L barrel. [ 50 ] For general issue, the U.S. Army adopted the M855A1 round in 2010 to replace the M855.

  6. Table of handgun and rifle cartridges - Wikipedia

    en.wikipedia.org/wiki/Table_of_handgun_and_rifle...

    Bottlenecked high velocity PDW cartridge designed by Heckler & Koch in conjunction with the Heckler & Koch MP7 personal defense weapon. 5 mm Remington Rimfire Magnum: 1970 [3] US 0 [3] R 5×26mm 2100 [3] 327 0.311 0.205 [3] 26mm Obsolete. [3] Rimfire. 5.45×18mm: 1973 USSR 1 H 5.45×18mm 1000 94 0.222 18mm Developed for PSM pistol. 5.45×39mm ...

  7. Terminal ballistics - Wikipedia

    en.wikipedia.org/wiki/Terminal_ballistics

    Bullet parts: 1 metal jacket, 2 lead core, 3 steel penetrator. Terminal ballistics is a sub-field of ballistics concerned with the behavior and effects of a projectile when it hits and transfers its energy to a target. Bullet design (as well as the velocity of impact) largely determines the effectiveness of penetration. [1]

  8. Marine Scout Sniper Rifle - Wikipedia

    en.wikipedia.org/wiki/Marine_Scout_Sniper_Rifle

    The Marine Scout Sniper Rifle (MSSR) is a Philippine semi-automatic designated marksman rifle developed by the Philippine Marine Corps for their Marine Scout Snipers.Designed in the mid-1990s to replace severely-outdated battle rifles then used as marksman rifles, the MSSR is essentially an M16A1 that has been heavily modified and accurized to serve as a marksman rifle.

  9. Longest recorded sniper kills - Wikipedia

    en.wikipedia.org/wiki/Longest_recorded_sniper_kills

    For example, a rifle capable of firing a ½ or 0.5 MOA (approximately 0.5 inch center to center of the two holes furthest apart) 5-round group (often referred to as "grouping") at 100 yards will theoretically fire a 12.5 inch group at 2,500 yards (0.5 × 2,500/100 = 12.5). Unless the group is centered perfectly on the target at 100 yards, the ...