I know someone who just scattered a really nice S&W 629 classic 44mag with another persons reloads.
The top 3 cylinders and top strap were completely missing and the barrel almost came off! One of the pieces went through a thick plastic divider that seperates the lanes at the indoor range. Luckily nobody was hurt but the pistol is most likely now a parts gun.
When I was young I bought a really nice Remington PSS in .308 and a friend of mine, who had been relaoding for decades, gave me some rounds. Being a complete novice I had no idea that the bolt handle being really tight after each round was a BIG warning then the last round cracked the extractor lip right off the bolt.