I have been using the Rem. 209s with 777 powder and I have had no misfires, just as I had no misfires with either Winchesters or CCIs. I do think the Rems. leave less residue, but I have also been swabbing between each shot. Next time I go to the range, I will try shooting a few without swabbing of both the Rems. and the CCIs and report. I do not have anymore Winchesters.