Out of my gun the Fed heavy weight didn't shoot good at all but then neither did the rem hev-shot. So far the best thing I have found is the Hevi 13 with the Win xtended range coming in a real close 2nd. This is coming out of a mossberg but my 870 liked the win xtended range alot better than the rem hevi and the fed heavy weight, I havn't shot the hevi 13 through my 870 yet.In the 870 I got the best pattern with a rhino .660 choke or a jellyhead .665. My hastings .660 and the puregold .670 didn't do all that great.