Not really a bolt/pump related issue, but a hot, dirty gun will eventually run into sticky extraction. When that does occur, compare the extractor on a pushfeed deer gun from Walmart to that on an AR15, or a Garand, or a SKS - or an M98 as an example of a well designed bolt gun. Yeah, it's about as much weaker as it looks. They also make it much easier to tear off the smaller area of cartridge rim that is engaged, which doesn't break the gun per se but it will sure put a halt to your rapid fire until you get your cleaning rod.
I have read that the bolt handle on Rem. 700s is soldered to the body and some people have broken them off. I don't know how common this is, or whether it occurred from hard use or defective examples.