Yeah, don't mess around with that steel cased $hit. Leave it for the commie rifles. I've shot a little out of one of my 10 carbines, and it ran fine, but that was basically just to burn up what I had on hand. And I've never bothered replacing it. That was early on, and it's been nothing but brass cased stuff since then. For blasting purposes, stick with some standard M80 like 98 said.