First thing you need to do is pattern the gun with different chokes using 3" BB or #4 buckshot.My 835 shoots 4 buck best with Mod choke.BB's shoot best with the Ulti Mag choke.Either will kill a coyote cleanly out to 50 yds.For calls most any open reed rabbit distress call will work.I like the Tally-ho.You can use a single or double reed turkey diaphragm.More reeds are ok if that's all you have but less is better.