They can run fairly large here in southeast Louisiana, but the average is around 250 lbs. that I've run across (Swamps offer a great deal of things to eat for hogs). I like using a .44 magnum redhawk with a 7.5" barrel. Long shots here are infrequent in the thick undergrowth. If I had an area where decent distance shooting was likely, I'd probably choose a .308 or .30-06 with the appropriate load, but rifle choices are personal things, and anything similar should work fine, too.