[m21sniper]

The 115 cor-bons are a great defensive round if you don't have barrier concerns, but they unfortunately discontinued their 147's some years ago. Most standard pressure 147s are subsonic, and a lot of pistols don't cycle too well with them. The Cor-bon 147 was +P so cycled well, hit very hard KE wise(standard vel 147s are very 'weak' compared to the 115gr +P corbon, which actually rivals 110gr .357 magnum) and had awesome penetration, but again, they don't make it anymore.

For practice just get whatever groups the best.