I have a Ruger .44 magnum bolt action rifle that I had suppressed. When I bought it I asked for a .44 special chamber cut bc at the time subsonic .44 mag was hard to come by. I was never confident the smith cut the shorter chamber. It will chamber a full length .44 magnum round no problem. I bought .44 go/no go gauges and it will close on a .44 magnum go gauge with a slight bit of tension but I am not sure what thats telling me. It will not close on a .44 magnum no go gauge. My question is do you think it is safe to fire .44 magnum in it? The difference in case length is marginal but obviously the .44 magnum has more pressure.