Well OFFROAD, it seems from a quick read that only one person has actually shot anything over 300 pounds using a slug. I as well have wondered about foster slugs. I have talked to a wild game processor from back east and he stated that at the end of the year he had a coffee can full of slugs that had stopped in deer. One poster states he has shot completely through 200 pound deer broadside with foster slugs. I have done the same with a 380 ACP. I hope some more experenced BIG game hunters will respond.