Subsonic ammunition is very fun to use, and it has a lot of applications. It’s great for training where you wouldn’t like to intrude on your neighbors’ peace and quiet –– for example, if you’re sharing a cabin with your grandma during a family reunion, you don’t want to rattle her too much before she decides which of her grandsons is her favorite. It’s also perfect for training new shooters with, as its lack of a supersonic crack will cause them not to learn to reflexively flinch when they fire. Finally, it’s stellar for hunting, as it’s less likely to reveal your position to your game.

This 300 AAC Blackout round by Magtech features a 1,050 fps muzzle velocity, which is safely below the supersonic threshold. It’s not ideal for hunting owing to its 200 grain full metal jacket projectile, but it’s still able to penetrate targets admirably and it also prevents the rapid accumulation of lead residue in your bore. Its brass casing and non–corrosive Boxer primer are perfect for handloading, so you’ll be able to try your hand at making your own subsonic ammo once you’ve exhausted this supply!

This 300 AAC Blackout cartridge’s muzzle velocity is only 1,050 fps. While that may sound slow, that’s actually the whole point to it — because it doesn’t break the sound barrier when it’s fired, it’s a relatively discrete cartridge to train with. This is immensely valuable when you’d like to brush up on your aim in a place where cracking reports wouldn’t be appreciated by neighbors, and also a good way to familiarize inexperienced or skittish shooters with a semi-automatic rifle’s performance. When utilized in conjunction with a silencer, it sounds like a mouse walking across velvet. (With some exaggeration.)

Because this is a Magtech product, this cartridge evinces quality through and through. It features a first run brass casing that’s ideal for handloading, a consistent and non-corrosive Boxer primer, and a propellant load that’s specially formulated to help create its subsonic velocity. Its heavy 200 grain projectile sports a full metal jacket as well, so you can count on great accuracy even after having fired for a long time.