I shot Powerbelts from my Knight Bighorn .50 for several years. However, I experienced some bad accuracy with them towards the end of that period. On Sabotloader's recommendation, I switched to the Knight Bloodlines, and will never go back. They shoot cleaner and much more accurately. The effect on game is tremendous. They are more expensive, but a good sabot is truly worth it. On a side note, I do not miss all the soft lead flakes littering the inside of the deer carcass. My nervous system needs all the help it can get, I suppose!