Fired all of the above, the Mosin is built like a Russian tank, you gotta smack it around to make it work ok, but it will outlast you, your children, their children, and their children ! I just can't foresee anything breaking on these things as every part of them seems to be so massively overbuilt it's ridiculous.
Edited to add: My bolt action milsurp "collection" consists of an M91/30 (Tula, 1934, re-arsenaled post war) and an M44 (polish, 1952, all matching and still has PLENTY of cosmo in every nook and crannie I bother to swipe a Qtip into). All others can wait until funds permit. Oh, and the caliber is more than enough to take down any critter found in North America if you wish to hunt with one. It has a fair kick to it though, especially the M44.