I'm surprised that no one has brought up Speer Gold Dot Short Barrel ammo, these are designed for this. 860 fps out of a 2" barrel, yes they are +P so maybe not what the OP is looking for, BUT it seems that the BB ammo while technically not +P, seems to at least perform like it, I'd like someone to explain how it's done, NOT trying to bash BB, it seems to be everything they say they are, and have MANY happy customers, I would just like to understand it, ya know, get smarter. Oh and I thought this interesting Buffalo Bore 158gr (non +P) SWC-HC