Yes Dan,

I think so, most ele are "doubled" (as soon as possible, I hope) by the PH. The trouble being that the statistics are scarce, encouraging pessimistic allegations.
That's the arguable aspect of bowhunting, not enough crude facts.
In my opinion an arrow can easily kill an elephant as far as the placement is right(large vessels at the top of the heart or both lungs fully
+transfixed).............and the KE and penetration capicity of the arrow are sufficient.