I have an older friend of mine that has this rifle. He shot at a nice buck and had blow back in his face and a cartridge stuck in the bolt. I think what happened was he didn't have the bolt all the way down. He never had any issue's with this gun, only shot at deer season same box of shells in 15yrs. So am I on the right track the bolt wasn't closed tight or is there any other issue's I should be looking at or could be? How could the head space get off if that could be the problem? I got the empty out of the bolt and will shoot it today. He is now paranoid to shoot it so any input would be very much appreciated!