Isn't it kinda overkill and/or takes the skill out of it?
Sorry, should have replied to this first.
The short answer is no, to both. 7.62x39 is roughly 85% the power of a Winchester 30-30, North America's reliable, cheap and plentiful de facto deer round. Hogs get bigger, and far meaner, than deer. 7.62x39 was made to be sensible balance between recoil and penetration on the battlefield, Russians caring for that more than 'terminal effects.' It lacks the flatter trajectory and bigger wallop than actual hunting rounds, but are more controllable on brisk semi-auto and usually come from a larger magazine. It's nice having extra shots ready to go for sure, but putting holes where they need to be on multiple targets moving fast, in and out of cover sometimes, takes skill no matter what you are using. The big ones can be really dangerous, especially if you don't have dogs running interference. Pistols are definitely a good idea, or someone who isn't hunting and just rides shotgun, giving perimeter security. Having semi-auto and lots of it ready to go is no vice on a hog hunt. Doing it that way is fine for awhile, but I think most people end up opting for stands, and dropping more than one at once, with timed fusillades from elk-grade rifles. Saw a video awhile ago of some guys doing it at night with nightvision, lasers and suppressors from the back of a truck. Those southerners get creative fighting the bacon invasion.