The Mini-14 is the most reliable semi-auto I've ever had, and it only used Wolf/S. Bear ammo and a (plastic), loose-fitting 30-rd. Promag.
It never had any operating glitch. In contrast, I watched a buddy's WASR "AK" have a misfeed (or eject) after about 80 rounds.
Having two Minis, only sold one to pay for a Lee Enfield Jungle Carbine.
The SKS should cost a bit less than a Mini and is just as reliable.
Combined with Wolf/Bear/Tiger etc 7.62x39 ammo, now much more available than last winter, the rifle/ammo combination is reportedly the best value .30 caliber, especially in a military semi-auto.
Mini 30, (Norinco) SKS, MN 44, LE #4, #5 and the fierce, devastating Savage .22