Magtech - Full Metal Jacket - 200 Grain 300 AAC Blackout Ammo - 500 Rounds

I used to get yelled at a lot in school. Why? Being a jerk, mostly, which included talking too loud when other students were trying to concentrate on … I don’t know. Math, I guess. I don’t really remember what was going on back then. I couldn’t hear the teacher over all the really funny quotes from movies and TV shows I used to recite. Loudly.

I’m glad I finally learned my lesson. I’m now quiet as a churchmouse, because I own a fine 300 AAC Blackout SBR and the suppressor it needs to go pfft-pfft-pfft. And just as importantly, I also got myself a case of Sellier & Bellot’s Czech-made subsonic good-goodness.

This round’s outfitted with a big lunker of a bullet: 200 grains, which hits a 1,060 fps muzzle velocity out of S&B’s 16.25” test barrel. That’s well below the speed of sound, which means its report doesn’t include the jarring supersonic ker-ACK that a suppressor can’t muffle.

The heavyweight bullet’s 0.558 G1 ballistic coefficient testifies to its enormous wind resistance, although its trajectory is pretty droopy due to its low MV. If you’re sighted up 1.5” and zeroed in on 100 yards, then you can expect elevation to dip all the way down to -32.1” at 200 yards; -207.6” at 400.

This subsonic load’s power factor is relatively low at 211.0. (For context, a 125 grain 2,175 fps MV load’s power factor is around 29% higher at 271.9.) That means this ammo may fail to cycle a semi-automatic without a suppressor.

The components themselves are quality. Bullet? A simple full metal jacket; no steel or attraction to magnetism. Cases? Brass; new. Boxer primers? Noncorrosive, of course. This isn’t Soviet military surplus, as proven by the fact that Soviets never heard of 300 AAC Blackout ammunition.