RE: wild boar
As SvenInar said, shot placement is everything. I've commented in earlier post on this subject, so I won't waste to much of your time. I grew up hunting wild hogs before we had a deer season where I live. I have taken them with a 22 LR and up. I don't recommend the 22 LR, but again as SvenInar said, put it behind the ear and he'll drop. I've also taken more than I can count with a 357 Mag.
My primary hog gun is a plain ole 30-30, with 125 gr hollow point. I handload my own 125s' now, but Winchester and Federal load them. Some folks will not like what I'm about to say, but I love a head shot with the 30-30, or anything like it or more powerful. Right between the eyes and he will drop, just like the ear shot. I'll also say, I'm usually very, very close when I make the head shots, normally within 20 yards. Personally I don't think there's an animal in the US, that can't be taken with a shot between the eyes. However, if you make that shot, you can just about rule out having the head mounted, takes a jam up Taxidermist to make it look right.
My two cents.
dog1