Twopipe, a couple of years ago I saw in a local gunshop a Ruger M77 in what I believe was .300 Winchester Magnum absolutely destroyed. The floorplate had blown out, the trigger assembly was gone, the siderail was bent outwards and upwards, the bottom of the chamber had blown off, the stock was broken completely through, but the bolt had held. The owner claimed the rifle was defective. Yeah, right, the only defective was the owner who had obviously loaded a fast powder rather than the slow-burning one he claimed he loaded. I have heard that the owner of the gun shop refunded the guy's money and told him to never come into his shop again, that he was too stupid to be shooting.
A friend in CA lost part of his thumb and forefinger when a .458 Winchester let go! He was shooting new Winchester 500 grain bullets sighting in the rifle prior to a trip to Africa. A screw in the barrel lug was drilled too deep into the barrel for the amount of pressure this gun developed and thats where it began. That one cost Winchester a bunch in the early 60s! Hap
I saw a Ruger 77 in 7mm mag. that was the victim of a bad handload. The owner thought he was using IMR 4831 and was in truth using IMR 4895. The gun was intact but the bolt was siezed in the action and after beating the bolt open, pices of brass were found inside the bolt from front to back.