Coming from a handgun competition background, I am not saying one way or another because I have ZERO firsthand experience with this setup. But I do know that all the GLOCK shooter i personally know absolutely will not shoot lead because of the (polygon?) rifling in glock barrels. Maybe this is just because of poor accuracy, but from what I understood it really leads the barrel bad... I'm guessing that you'd still be fine with the small amount you're shooting and most likely close distances. If I really felt my life could be in danger I'd be shooting a few hundred to ensure 100% reliability. So this is something to consider.