A note on the Xtreme Penetrator round I mentioned earlier: I ran across a review on Youtube of a guy testing out their 9mm, 115 grn. round (loaded ammo from LeHigh, not hand rolled). He chrono'd the rounds at about 1250 fps, average.
He ran two tests, The first one through 32 inches of the clear ballistics gel with 4 water jugs behind it for back up. He fired, from a pistol (4 to 5 inch barrel) form 10 feet away. First two shots went through 32 inches of the gel, all four water jugs and out into is yard (he recovered one). Then he put a steel plate after the jugs, which stopped the third bullet.
Second test, he used a more dense ballistics gel at 24 inches and four water jugs backed with the steel plate. Again, the bullet stopped at the plate.
The only marks on the recovered bullets were the nose denting from the plate, and the one he recovered from the yard was flawless except for the rifling marks. The wound channels in the ballistics gel were fairly impressive for a non-expanding bullet that didn't deform at all - they varied from about 1 to 2 inches along the channel. Then he shot the gel through 4 layers of denim - if I remember correctly, that bullet didn't make it all the way to the plate.
It seems the Xtreme Penetrator is aptly named, but may be a bit of an over-achiever for deer sized game. Of course, you might be alright if you only shoot at large deer wearing denim jackets. But then the jacket would cover up the Crossman tattoo on their shoulder.