Actually if you're using CCI MaxiMag +V that's about the hottest load you can get. I believe it has more to do with the size of the casing than how hot the load is. I have one of those R31 carbines that Cummins4x4 was referring too. I, like him, had problems with it when I first purchased it. I had to send it back to the factory twice for repair. Fortunately I was able to do this before they went deep-six. It works fine now and shoots fairly reliably. It's a hoot to fire. I get all sorts of cock-eyed looks at the range when I break that thing out.
I would like to post a picture of it, but for some reason all that shows up is the old "broken window" when I try to post. I was always able to post pics on the old site, but for some reason I can't on the new one. Anyone have any idea why?
MG