1970s, Weaver K-4W fogged up. Weaver mounts, removed scope and flipped up rear iron sight and kept hunting.

Had a scope go to hell about 7 years ago, 4 to 5 inch groups,confirmed by two other shooters, but that was at the range and not in the field.

Early 80s, chasing lands a little too enthusiastically. Removing a chambered round and fill a Savage 99s rotary magazine with H335 when the bullet remained in the chamber. Got the bullet out with a sharp drop on the rifle butt, but had an effective single shot till I got that magazine cleaned out. I chalk this one up to operator error in reloading.

Buddy who likes semi autos but not cleaning rifles often has a hang up of sorts out on the field.