I shoot +P in my CW9 on a limited basis. Since that is my carry ammo (Gold Dot 124 gr. SB) and it is rated +P I shoot a few rounds at the range just to be sure that it is cycling properly. The bulk of my practice is with regular pressure hard ball. +P is definately snappier and therefore puts more wear on your gun but limited use is perfectly acceptable. By the way, the Gold Dot ammo I mentioned, manufactured just for short barrells is very accurate with my CW9.