Scott,

I use the SP on cats and they're truly fantastic..... they knock the shit out of them. The bullet on this Lion entered just under the eye and the exit hole was three fingers big..... if that makes sense.

If you check my website anytime after the middle of this week you'll see a picture of a Leopard I shot in the face with the same type of bullet and it travelled all the way down the length of the cat and left an exit hole about 2 inches across.

I use the PSP on Buffalo etc and again they perform really well. A couple of years ago, I took a texas heart shot at a running, previously wounded Buffalo bull. The bullet travelled the length of the animal and spun him 180 degrees and dropped him like a sack of coal. We found the bullet in the front of the chest cavity.

I've also shot Buff through small trees occasionally with (Stewart) mono solids and they've even held together in those circumstances...... but I've gotta say, I'm looking forward to trying the GS custom bullets for comparison.

FWIW, I load my ammo to have a MV of 2200.

As to the Barnes X, I might be wrong, but I seem to remember they need to travel at around 2400 fps to perform at their best...... but I guess it'll be on their website somewhere.