When my son worked at Gander years ago, they frequently had customers come in with .22 auto problems. The solution was Mini Mags, though a few seemed to think a rifle should be able to handle whatever crap ammo they fed it.
.22s with minimum chambers need good ammo. Even then, some may not permit a chambered round to be removed without firing it. Comes with the territory. Some, like my CSC, also can't use Stingers, or other non-standard types. Your pal should get a bore snake, and use it, and possibly change ammo types.
EDIT: Just checked the 10/22 manual online, and the Target models also aren't safe with Stingers, and it describes the same situation you did, a ruptured case.
Last edited by Pappy348; 03/27/20.
