Must also mention that I've fired over 100,000 rounds from Remington 700s (and 722/721s) and never had a bolt handle fall off, or an extractor break. I guess that's very damn lucky!
25 years ago I saw a big guy jump on an FAL action handle [like jumping on a pogo stick] to clear a stuck case. I was shocked the rifle survived and the case came out.
I have had a TIG welded military Mauser bolt handle fail at the weld with ordinary use.
Stuck cases in Mauser with forged over bolt handles... I have pounded out some very stuck cases,