I purchased some nickle plated steel cased 9mm ammo (Silver Bear) at a gun show recently. I know you aren't supposed to shoot it in the Sub but just out of curiosity is anyone doing it? It was so d*mn cheap and has a massive HP cavity, I just had to give it a try. My only other 9mm is a Glock, which are notorious for having loosely supported chambers but I don't think I've heard anything about no steel cased ammo, I'll have to post on GlockTalk and ask. Sounds like I might just have to go buy a new gun to shoot this stuff - boy I love my logic!