Thanks--it's the Xtreme Penetrator he's thinking of.
The idea is to bust the heart. I'd use a copper solid before I'd use anything by Lehigh Defense. You're better off with a hard cast solid. They penetrate deeper and won't deflect. The Xtreme Penetrators rarely penetrate straight, even in just ballistic gel. They always turn.
For self defense, in my backup carry pistol, I have the Underwood ammo loaded with the Xtreme Defender bullets, but people aren't as thick and tough as most animals. I have friends inside Underwood and Doubletap, both are top rate ammo.
I would show the animals more respect and not go testing Gimmick bullets on them, that you haven't tested for yourself. Not trying to be an ass, just giving my 1.5 cents worth.