IMO bang flops are rare with Hogs, most of what I shoot are around a hundred-hundred and fifty pounds. The vast majority run 40-60 yards after being body shot. Most of my shots are crossing shots, so exact aim isn't likely. I could use a hollow (or really soft) point bullet I guess and do more damage, but there is always a compromise between effectiveness and meat damage. One oddity I've noticed is a larger slower bullet 9 MM (35 caliber 200 grain semi round nose soft point) at a little over 2000 fps, seems to slow them down better than a faster smaller bullet (30 caliber 2700 fps). Best guess is the faster smaller bullet is usually a through and through, which is wasted energy. IMO Hogs are less prone to hydrostatic shock than Deer are. Not always, but often enough to be noticeable my 35 Remington will stagger a hog (more chance of a second shot) and the bullet won't exit, while my .308 seems to often ( most always be a through and through) just puts them into afterburner until blood loss puts them down. Not a rule just a tendency.