|Bullet Weight||62 Grain|
|Muzzle Velocity (fps)||2992|
|Muzzle Energy (ft lbs)||1323|
|Cost Per Round||82.5¢ per round|
This cartridge has a 62 grain FMJ bullet. Its relatively heavier weight gives the bullet a higher ballistic coefficient at the expense of a lower muzzle velocity than a 55 grain projectile. It offers the best accuracy out of a 1:8 or 1:9 twist barrel, but a 1:7 twist barrel will not perform poorly.
The SS109’s jacket does not have a green tip like the M855, but the bullet’s interior is otherwise the same. The frontal section of its core is made of solid steel, which is why it’s able to penetrate barriers while remaining intact so effectively. Steel is magnetic, of course, which means this ammo may be unacceptable for use at some indoor ranges as well as unsuitable for shooting steel targets.
The Brazilian manufacturer Magtech loads their SS109 ammunition with brand new brass cases. You may notice that the cases are annealed – that means they are heat-treated for added durability, but not formerly fired. These rounds’ non-corrosive Boxer primers mean you may reload them at your own ammo production facility!