Rodsmith- I have been using 295 gr. HP Powerbelts with 2 50 gr. Pyrodex pellets with excellent results also in my Knight disc rifle. I have used these on whitetail deer and Russian boar and have had single shot kills every time. Most of the animals dropped instantly and a few went a very short distance after being shot. I was able to recover some of the bullets from the animals and they closely resembled the bullets you recovered in your tests. I find the Powerbelts to be very easy to load, very accurate, and dependable. This last Thanksgiving my 17-yr. old son dropped a trophy 12-point buck in his tracks with a 295 gr. HP Powerbelt with 2 50 gr. Pyrodex pellets fired from his Knight T-bolt rifle. I highly recommend them to other hunters. I recently test fired some of them using the new Triple 7 pellets and you may read my post entitled Tried Some Triple 7 Pellets for the results.