I believe they handle escaping gas better than any other. Last year a fellow at the range fired a .270 in a 7mm Rem. Mag. chamber without disastrous results. First time I ever saw a .270 Winchester case with a belt.
A friend at work did the same with disastrous results to the 7 mag. Why he didn't lose an eye, ear or anything but some skin on his face only the Lord knows. Not sure what make but if a 700 the three rings worked. Having a bolt blow backward into yer face has happened.
