Shot placement matters a lot, there is a place 3 inches over the heart where there is a nerve center right next to where all the big arteries from the top of the heart divide that is the spot I usually hit and its where all the bang flops come from for me. This shot will also take out both lungs, its further forward on a boar than on a deer or elk, a bear is more like a boar as his is further forward to. Where you shoot them has a lot to do with how far they go almost irregardless of the bullet.