I have a Ml exactly like yours I have competed with it and won 4th place out of 35 shooters two weekend ago in Rocky Mountain House, Alberta, Canada. I use Hodgedon triple 7 FFG
40 gns with a spitpatch and ball worked for me. I up it to 80 gns for deer. With a 28" barrel, you'll find that there will be alot of unburnt powder if you go above 80 gns. I chronographed my loads and the 80 gn load sends that ball out at 1721 FPS. That's more than enough to drop Bambi's father at 50 yards. Your smoke pole should be accurate to 100 yards. I tweaked my sights and installed a orange fiber optic sight and mounted a tang peep sight on the tang. I kept the original sight and use that for competition as the regulations say open sights only. I just use the peep for hunting.
I absolutly love my rifle and I'll recommend this make to anyone.... Good choice mate!
Cheers,
A.T.