Originally Posted by BGfisher

Certainly it's not the bow itself. Doesn't matter what bow it is. All any bow does is launch an arrow at a given velocity. Years ago a good compound launched an arrow about 200 fps. Today most will shoot 250 fps or more.

The bow makes no contact with the animal. The arrow's job is to deliver the SHARP broadhead into the animal with as much of that arrow's momentum as possible. To do this it must have as much of it's momentum driving the broadhead straight through. To fly straight the arrow must be properly spined and the bow.arrow combination tuned to do so. No fishtailing or porpoising.

Add to that a broadhead that is sharp and uses all the momentum possible. It's a well documented fact that mechanical heads use as much as 25% of the arrow's energy to pierce the hide and open up. Some more than others.

If you want the utmost penetration then fixed blade heads are still the way to go. And that means just about any good quality head---not somebody's favorite. Two, blade, three, four? It doesn't matter a whole lot so long as it is sharp and doesn't cause undo planing and goes where it's aimed.

Even then there are no guarantees, but with your 60+ lb. bow and a properly spined arrow, tuned well there is no reason you can't shoot any North American game let alone a little thin skinned deer and get pass throughs.