I own a Kodiak and here in Colorado it's open sights, loose powder, and a roundball or conical. No sabots or scopes. Here is the load I use.
85 gr. Pyrodex P
370 T/C Maxiball
Remington Kleenbore 209 primer.
This is very accurate out to 100 yds. for me. I hope this helps. 85 gr. Pyrodex P is about equal to 100 gr. Pyrodex RS. Never go over 100 gr. of loose powder (or 85 gr. of Pyrodex P). The Pyrodex RS is like Goex 2f and the Pyrodex P is like Goex 3f.
Hope this helps.