1biggun, your right. I had a brain fart when posting. The 458x1.5 would fit the mag. It was the belt that I was wondering about. Feeding, stacking, etc. and if you turned off the belt then it would have to headspace off the mouth.
This was one of those "what if" things while waiting for some parts to show up. I was looking for ease of making brass and something that wasn't proprietary to a maker. I wouldn't want to spend 30 minutes per case to have the AK punt it to China or dent the crap out of it. Or send a barrel to someone to cut a chamber for X2-X3 times the cost of what a reamer would be and I could cut it myself. So, a 30.06 case cut below the shoulder, some 44 mag bullets that were on hand, and you get something like this.
The case would have to be fire formed as you can see from the pic that there is a dip below the seated bullet. The lead on top of it was smashed in the loading due to not having a 44mag seating die at the time. The case has not been crimped. On the 44automag they inside neck reamed to a depth of .590 which might be needed to help keep the bullet from moving under recoil...don't know. A Lee factory crimp might keep it in place or might need a canalure in the case....don't know. A RCBS 44mag neck sizer is too big to start in the case, so an expander cone is needed. Like I said, this was a "what if" thing and didn't mean to highjack the thread.