I'm thinking about getting an AR style pistol, either 9mm, or 300AAC blackout. The use would be for home/individual protection. I already have several 9mm weapons, so the common ammo is readily available to me. I'm not sure why I'm considering a 300AAC blackout version. I don't have any 300AAC ammo, so that would mean starting a whole new stash of ammo.
Any opinions? Would there be an advantage to 300AAC?
Any opinions? Would there be an advantage to 300AAC?