I outfit alot of hog hunts on my ranch and with bow hunting for them I go about shot placement in two different areas. Hogs have a big shoulder plate that pretty much covers their heart area. I shoot the hogs just like a deer when they have their front leg forward exposing their vitals. The second shot I like to take I guess is a quartering shot facing you. I put the arrow in at the base of their neck directly to the heart. Dont worry about pass throughs. It more than likely wont happen. But if you stick a hog with a broadhead in the heart that doesnt pass through as the hog runs off the head will continue to do damage. It will slice and cut as the hog moves. Hogs will blead out it just takes alot of damage to get them to. I use a 125gr muzzy fixed blade on gold tip xt's. I have tried using a mech head with less success. Good shooting.