No steel core allowed at the club I am a member of as well. When you sign up they tel you, when you do your intro shoot, guess what? They tell you. Signs are posted in the shooting bays "no steel core ammo"... what did I see yesterday? Guy blasting away with green tip. Range officer caught it pretty quickly, guys said he bought it there so he thought it was okay. There was a sign right on the pile of green tip boxes for sale that it wasn't range safe. Some people just don't think or care. Not the only range rule I saw him and his friend break that day... idiots.