Your right that the rifling is bad for lead. It builds up and can cause high pressure. The problem with the reloading is that Glock for one will void the warranty. Second is that the majority of Kabooms have come from reloaded ammo. Someone being carless or not watching and throwing a double load. Granted like you already know that can happen with any gun.

I know lots of people who do have/do reload for the Glock. They have no problems, guess I proably will one day to.