Larry: I wasn't comparing elk or moose to elephants either, just pointing out the speciousness in the statement that size of the animal doesn't matter regarding penetration. It does. The original question asked about hunting elk or moose with less than 50# (trad) bows. There's a big difference between the size of a deer and an elk, and likewise between the size of an elk and a moose. They get successively bigger, with thicker,tougher hide, more muscle, bigger bones, more body mass to penetrate, etc. This isn't a matter of opinion. It's fact. Moving from deer to elk to moose, the arrow needs to become more efficient, pack more energy or momentum, whatever you want to call it, to get the same level of penetration.