thndrchiken I have a eclipse mag 1 in 28 twist and I found pyrodex select to work the best 110 grains of powder an a percision sabot QT 40 in 235 grain . I also favor the percision silver lighting green tip sabot .
My eclipse for some reason will not shoot power belts I have tried them ,will all ways pick up a flyer in a 3 shot groupe.
Good luck with your new toy lots of fun shooting B/P