Funny, I shoot at the Scottsdale Gun Club myself. Was out there last Saturday with my Makarov and P-64. Couldn't shoot my Silver Bear ammo, so I had to make do with my limited supply of S&B. I actually talked to a range employee about why they don't allow bimetal jackets. It's not due to fire hazard or backstop damage, because that range is rated for .50 BMG. It's because it gums up their cleaning auger when the jackets separate. They don't seem to care about steel casings, though. I think those are swept up manually.