Welll, my 308AR is not a S&W, it's a BM. But yes, I hunt hogs with it. For that application, it works really well. We usually hunt them at night, thru fields and brush. Easy enough to pack and run with; while it's a lot heavier than a 30-06 bolt rifle...... there is something to be said for having enough rounds at hand to put the hurt on an entire sounder. I have hunted it on NV, on thermal, with a 6x scope and moonlight, and spotlighting hogs after we find them with a thermal scan of an open field, and we creep up on them.
The one thing I rarely get to do is hammer down into a sounder at close range. We hunt in pairs, and you need to be sure you don't leave your shooting zone under any circumstances. So...... it's one to 3 shots, depending on how many and how close, and especially depending on what direction they run once you start making noise.
More than once, they have run panicked right into us or right thru us. You don't get much of a chance to take a shot on a hog like that unless you are VERY QUICK with a pistol, and don't mind dropping the rifle like it was on fire.