Builder - you young whippersnapper. PRBs have been humanely killing critters long before any one of us were a twinkle in our daddy's eye. And they will continue to do so long after we are gone. A big heavy conical is fine for big nasty toothy critters. But for deer, black bear and hogs, which is what most of us use our MLs for, niether of these animals would know if they got hit with a big old .54 cal PRB or a conical. And the latter may just cause more tissue damage thereby wasting more delicious meat.