Posted On: seven/23/2020 By: Kenneth Meredith A: SIG's P320 handguns are in fact capable of hearth 9mm +P ammo. You do not need to use your handgun out by education with overpressure ammo, Normally, but for self-defense it can do really nicely.It is a good revolver for the money. It shoots like a desire in one action. I took another reviewer's advi