I am not an expert on this at all and will likely draw death threats, but I have been told it works better than 5.56 on shorter barreled AR pistols/SBRs.
A nice versatile round, Subs are very quiet with a suppressor. Drop on them look like a rainbow. Sonics are on par with 7.62X39. Pretty expensive for ammo, unless you reload.
What are you planning on using it for? It's nice for short barrels because the powder burns up within the first 7 inches of the barrel unlike 5.56 guns.
Great knockdown power for a SBR. Super fun to shoot, extremely accurate out to 300 yards. Good pig gun if you’re into that, or makes a great home defense or truck gun.
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