I have had really good luck with the barnes mz expander. I have shot several deer with them and it has just absolutely floored them. I got a nice 8 pointer with the muzzleloader and it did not even flinch. It just dropped. However, I tried the cheap hornady saboted hollow point though and it did not expand at all. The deer I shot with the hornady ran about 100 yards before it fell. The Barnes expander had a perfect mushroom and it retained all of it's weight eventhough we were shooting a really big load of powder. I would recommend it to anybody that wants to drop a deer in their tracks. I like the 250 grain bullet with 115 grains of FFG. I hope this helps somebody get a good idea what to get.