While it may be rated for continual +P use, I have to believe the more powerful the rounds you put through it - the faster wear will occur - just common sense to me. I guess they count on the fact that the +P's recoil alone in an Airweight would discourage most people from a steady diet - not to mention the expense.

Personally I would shoot a few +P's for familiarization but shoot mostly standard velocity for practice. Your hands will thank you also.