Because I like to try different loads, I prefer 777 loose powder. I premeasure 80gr or whatever into small plastic sealed containers. When loading, I just pour the contents down the barrel and load whatever bullet. Using 209 primers, I have never had a misfire in my Huntsman or in an inline TC. My experience shows 80 to 90gr with a 240gr or heavier 44 or 45 cal. sabot gives great (2in groups) at 100yds. and always gave a one shot kill. I just like the dependability and flexability of this combination.
best, nrb