If you shoot the hog and it goes down and stays,,the gun was big enough,,,however,,,if it doesn't go down and stay you are in for a very bad day.
The wild hog is totally different from pen raised,,they are armored in the front shoulder area and have a very nasty disposition in general,,when you shoot/hurt one they do their best to get even and more.
Hunted wild hogs in Georgia,,if you have to ask, is this gun big enough,,there is your clue.
and with a M?L there is a delay between shots,,,the hog will not wait.....