I have a standard P345. The only thing you really need to know is that the magazines have to be fully seated to ensure that the magazine safety is disengaged. Some people have a problem with it, some don't. Never fired +P ammo in it, so I can't tell you what that's like. Currently loaded with Federal HST 230 grain (standard pressure). I also have Speer Gold Dot Short Barrel 230 grain (standard pressure) and Winchester Ranger 230 grain (standard pressure).