2024年10月4日 · Today, we’re at the range to take a look at the M855 and M855 A1 cartridges. These are 5.56mm cartridges designed for the US military’s infantry rifles. The M855 A1 is a modernized version of the M855, with a focus on improving ballistic performance. Background. The M855 was introduced in the Cold War era, with a 62-grain green projectile.

2023年12月23日 · M855A1是M855的改进型号，是一种5.56毫米口径的步枪弹药。 以下是M855A1的一些主要特点和改进： 弹头设计： M855A1采用了改进的弹头设计，使用铜制弹头，而不再使用M855中的钢制芯心。 这个设计有助于提高弹药的穿透力和停止能力。 Enhanced Performance Round（EPR）： M855A1也被称为Enhanced Performance Round（EPR），这反映了其在性能上的改进。 EPR的设计目标是在各种条件下提供更一致的性能，包括穿透护甲 …

2024年10月4日 · An M&P sport in 7.62 NATO with an 18 barrel and 20 rd mag is a STEAL compared to a gun with its guts hanging out and costs 2x as much. Its 7 lbs. Plus sights. And no gov profile barrel.

2010年11月26日 · In 1982, the Army adopted the 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). A steel penetrator in the...

The M855A1, a 5.56 mm Ball ammunition, is an enhanced performance round for today’s combat and training environments. It works with the M4 Carbine, the M249 machine gun, and the H&K and M16A2...

2024年3月13日 · Ballistically, the M855A1 is superior to standard 5.56 rounds in several respects. It has a higher muzzle velocity and maintains stability and accuracy over longer distances. The round’s aerodynamic design reduces drag, allowing for a …

2014年5月21日 · Sufficient M855A1 cartridges were obtained to compare performance to the previous M855 variant, and to measure any improvements, differences or deviations. The tests employed Colt, Remington and...

I chronographed M855A1 at 3149fps MV out of a 20" 1/7 gun, and 2978fps out of a 16" 1/7 gun.

It is an improved variant of the M855 round with enhanced performance and penetration capabilities. The M855A1 features a 62-grain projectile with a steel penetrator tip and a lead-free copper core. It is designed to provide increased accuracy, consistency, and improved barrier penetration compared to its predecessor.

2024年7月26日 · Consistent Performance: M855A1 offers improved consistency in terms of trajectory and accuracy, leading to better shot placement. Optimized for Short-Barreled Rifles: The round is designed to perform well in shorter-barreled rifles, which are increasingly common in modern military applications.