If you are concerned about killing your neighbors or kids with stray rounds, you can minimize that chance by using the 55gr or 60gr Vmax loads (like the TAP Urban) from Hornady. They have 1/4 the energy of rifle rounds and questionable terminal performance, use a pistol instead if you want maximum signature reduction (which I also don't recommend unless you live in a tight house).Ģ.) The 5.56/.223 has much better projectile selection than the. Great info here already OP, I'll just add this and a quick run down of the following:ġ.) Never use subs on living things, especially not for HD. Also consider and practice with things like gas blowback from the suppressor to make sure you fully understand your system and how it works before you ever use it (hopefully never). (If you've ever released your bolt w/ your ear next to the ejection port, you'll know what I mean).įor the most proven and reliable system, stick with 5.56 and the defensive ammo.
Without ear-pro, you will still be subject to loud noises such as the cycling bolt. It's something to note that while 300blk subsonic may be below 140dB when suppressed, it in no way makes things whisper/hollywood quiet. A suppressor on 5.56, while not hearing safe or pleasant, will most likely reduce the concussion and flash of the short barrel and reduce the risk of you being disoriented. home defense), the velocity of said rounds out of a short barrel AR should be within their designed expansion parameters. Everything else in 300BLK made for hunting/defense appears to be supersonic, at which point you might as well stick with 5.56.įor 5.56 ammo choice you should probably be considering soft point cartridges anyways (XM556FBIT3, Speer Gold Dot, Federal Fusion, and similar). I haven't done the research yet as to how they perform vs conventional pistol rounds and 5.56, but they are a possible option. As far as I know the only subsonic 300blk rounds marketed for defense are Lehigh:
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