hand-loading for Glock 20? I've pretty much decided that I want to buy a Glock 20. I used to own a 19 which I'm still kicking myself for trading. A Glock 20 is within my price range, and has a large capacity. 10mm seems to be a great caliber. My question is will I be able to use ammo I hand-loaded using NEW brass? I understand (per canebrake) that using reloaded ammo in a Glock is a bad thing. Does that mean using spent brass only? Or, should I just forget about hand-loading for a Glock and think about some other caliber/gun? Thanks.