I am carrying a 442 with the 38 +P's CDI ammo. They have two brands for the 38, a standard and a +P. I only carry the +p in my 2002 442 that is etched Airweight but not stamped +P on the barrel. What I use for practice is the old 38 LFN 158gr loaded by the old National Bullet Company. Probably doesn't get over 750fps so no problem with wearing the gun out. If I ever have to fire the +P's out of my Airweight I will need them and it doesn't matter if they shouldn't be fired in the gun or not.