I've killed pigs with a variety of broadheads, bottom line... it's all about where you put it. A fieldpoint will theoretically do the job if youpoke 'em in the"vitals." My personal favorites are Slick Tricks but I've had success with these others as well.

Magnus Stinger 4-blade, Muzzy 3 & 4 blade, Eastman Silvertip (Silverstrike), Eastman ST3, and American Broadhead Sonic 100's.