Here is my experience with Patternmaster. I got one for my BPS 10 and with 4 buck it is very deadly out to 60 yards on fox and coyotes. This is measured yardage and they are riddled with holes. The pattern on the board with T and F shot from the same gun is about 90% at 50 yards. The only problem is that such a tight pattern you better shoot enough to get your leads down pat or you are going to miss a lot till you get used it. I would highly recommend it but that is my opinion. Good luck!