[21Carrier]

I shoot reloads all day long in my stock G29. From everything I've heard, shooting lead is the only danger in Glocks. Apparently, leading in the polygonal barrel rifling can cause pressure spikes and a potential over-pressure situation. I don't shoot lead in my Glock barrel, as it seems to be a pretty definite cause of kabooms. I know many do it, but I would say just buy an aftermarket barrel to shoot lead.

Like someone said, Glock advises against shooting reloads in general just to cover their butt. Since they can't regulate reloads, they advise against them. As long as you use jacketed bullets, or keep plated ones away from insane velocities, you should have no problems.