Hello, Have a 835 as well and been trying to get a good pattern for coyotes as well. Have tried several Mossberg chokes(full turkey-.695, full-.730, modified-.750 and the Carlson Dead Coyote-.685)with poor results. The best so far with my 835 has been with the Modified choke and #4 buck. I think the fulls and Dead Coyote has too much restriction for the overbore 835. Just my opinion. The DC choke is restricting .090 thousandths. Been trying different loads as well but nothing jumps out as being the magic load. Bought some DC hevi-shot this week but haven't tried them yey. I think a ckoke between my modified and full will be the ticket hust from what I'm seeing. Gonna try to find something around .710 and .725 and see what happens. There is no magic load and choke for the 835, every gun is different, like everyone has stated you got to pattern it and go from there, just my two cents on what I've found so far with mine,Good luck and pad the shoulder,
Ron