I appreciate the reply. Trust me, when it comes to hunting, I would never go cheap on ammo. I have too much love and respect for animals to ever make an unethical shot or use insufficient ammo. I'd want to make sure it was a quick, clean kill. I do plan to brush up on the hog anatomy and plan to do plenty of long distance testing with both the hunting ammo I decide to go with and the rifle itself. You have given me a lot of food for thought and I'll be doing some research. Thank you again, I really appreciate it!Are you willing to take head/neck shots? If so, then 5.56 will be fine and I would choose it over 7.62x39 or .300 BO. If you're going to stick with normal body shots, it'll still work but you need to put more effort into picking a good bullet, IMO. Personally, although I usually try for head/neck shots I still use Barnes ammo in case I need to take a body shot.
I think there are good reasons to pick up a .350 Legend but not overwhelming ones. A 6.8 or 6.5 would really make more sense unless you plan to hunt with the .350 L on public land in Indiana or one of the other states that allow it for deer.
Whatever you choose don't be a cheap *** on ammo. You're planning on taking the live(s) of animal(s) and likely expending time, money, and effort to do so, cutting corners on ammo cost is beyond foolish. Also, spend some time studying hog anatomy diagrams. They are built differently than deer and a typical lower 1/3 chest shot equals a gut shot hog unless it is placed tight to the shoulder.