I have a new t/c encore. I was wondering what bullets and powder would group the best the max powder i will use is 100. But as of now I have been useing 90 grains of goex ffg, and shooting a hornady 240xtp in a t/c break away sabot. the groups are alright but not what i like with a muzzleloader. i get a 2 1/2 group at 60 yards, I would like to be touching bullet holes everytime. Also my muzzleloader will not shoot as good when i swab the barrel out after each shot, it shoots best when dirty. what would cause this, i have never had a muzzleloader that shot better dirty.

Thanks