Hogs are hunted with just about everything, dogs and knives, handguns, slugs, bows, just about any caliber .223and above, it's all good. Your mini-14 should be fine. I'll offer one piece of advice. I've found that if you see smaller hogs hold your shot...the big ones come in later. They don't get big and old by being eager...they get big and old by being cautious. Good luck.
Hijo de mala leche