I have a knight wolverine in 50 cal. The American Knight is basically an economy model that is real similar to the wolverine.
In my wolverine, 80 grains of 777 fffg topped with a 220 grain Dead Center Sabot and ignited with the standard ol #11 primer will consistantly shoot a ragged hole .4 inch group at 100 yards. My encore won't do better than an inch. Heck, only my custom 7mag will do better. I think some modest load of 777 80-100 grains and some quality sabot, SST, Dead Center, etc. will be the ticket for your gun. I would also stay with the #11 cap. Ignition is fine.
Smoky