^^^^^^^^^^^^Agreed.I have heard about shoulder plates and titanium infused skulls that you need a 50 BMG to penetrate, I have heard of .308 rounds "bouncing off" of a boar shoulder and all sorts of nonsense. Shoulder or just in front of there will be just fine with anything centerfire.
Hogs are NOT bullet proof. Here is an average size (mature) Boar on our place. I’ve been watching him for a few days…waiting for the wind to get right and for him to come in a bit earlier so I don’t have to pull an ‘all nighter’ on stand. Hopefully take him out this weekend.
IF you shoot hogs in either spot I have indicated (neck or high shoulder) your hog will drop right there. It might kick a little, it might even do the ‘Curly Shuffle’ some, but you won’t have it run away.
Any centerfire cartridge suitable for deer hunting will work just fine for hogs IF you achieve good shot placement and do NOT use a varmint type bullet.