Witnessed a 375 H-H go off in a 458 Win mag while doing range duty. No fan fare, a low pfft and a humiliated look on the shooters face. He did have a nice "chamber cast" though. You could clearly see the start of the rifling and the throat on the expanded brass.
Only popped a primer once. Vanguard in 300Bee. Only felt stout recoil.(7828/200 sierra) Pulled the rest and stuffed 110 RN carbine bullets on top and shot them. Wished I had chronoed the load. Would hold less than an inch at a hundred yards, and a grey puff behind the target! Bet it would red mist a squirrel.
