I havent shot magblends out of my 20ga BPS yet, but I have shot straight 6's and 7's in both HW and Hevishot. With my bps and a Hevi13 choke I average around 168 with the Federals and 150's with the Hevishot in #7. I dont remember my numbers for 6 shot, but I wasnt pleased and honestly the FedHW7's were great with a very even pattern, so I am sticking with them. good Luck.