I’m going to add a little different slant on this, you want a Ruger M77, that is a bolt action unit and it is very slow to get to a second shot. Because it is so slow to that second round I would not have a small round like a 556/223, because of that slow recover to a second shot I believe it should be like a 308, 30-06, 300, something with a little knockdown power. Now we are talking about Hogs and shot placement is everything. You could shot a 155mm canon at the hog and if you miss, all you do is scare the hell out of it. I don’t have a problem with bolt actions, I have my friends old Win M70 pre 64 30-06 and that thing has done deer, bear, elk, but it is slow to a second shot. I do like the classic. but
The neat thing about the AR platform, you can have one lower and different uppers. You can have a dedicated 22upper, a 556 upper, 6.8upper, 300aac upper, 6.5G upper, etc. We have been using 6.8’s and AR10’s 308 on hogs and having very good luck with them. The AR is so fast that I have hit a hog in the front shoulder with 6.8 and rear hip as he moved. You can’t do that with a bolt action. I know guys that have used AR-15 556 on big hogs and they said that it bounced off the big ones (300+). IMHO