Don't know what he has against Wolf ammo, I've shout a couple thousand rounds of 9mm, .223 and 7.62x38 with zero issues. It's a little underpowered compared to most higher end ammo which equates to about an extra 1" of drop per 100 yards give or take. It's also a little dirtier, but unless you pan on shooting 1000 rounds per range trip or you're afraid to clean a gun after a trip, it's nothing to worry about.
I would buy a Ruger 10/22, or any bolt-action .22 used it you can, and learn the basics of aiming, and accounting for wind/ bullet drop. You'll save more than the cost of the .22 in ammo learning and getting comfortable shooting, and tehy're always fun to take to the range $15 for 500rds much more fun that $15 for 5-50rds depending on caliber for a center-fire rifle. Then research the local laws about hunting boars and whatever else you want to hunt, use that info to pick a rifle that will work for you. Don't waste money on a .223 if you need a .240 or larger round to legally hunt. The Remington 700 line is a good go-to platform, they're available in almost any caliber, and while not as accurate as top of the line rifles, they're reasonably priced and accurate.
The AR15 is a great platform, standard .223 is a good round, and you can swap uppers and mags to 6.8 or .50 beowolf for some extra oompf, and an AR10 in .308 is a good option for larger game, but I would get a bolt or lever action for my first and or only hunting rifle.
