In all honesty, a full size, all steel gun can handle limited use of +p+ ammo. However, it WILL accelerate wear on the gun. I wound not recommend it, however, in compact and sub-compact handguns. I'm not talking about guns like the 75B Compact...I'm talking about true compact concealed carry guns, like a Ruger LC9. Just not enough meat on a small gun like that for increased pressure.