If anyone has a TC Muzzleloader, please let me know what bullet and powder charge you use for best accuracy.
As mentioned above I got the same results with everything the same except I used the 777 pellets.I own a black diamond and it is very very accurate with 100 grains of FFF pyrodex, 777 209 primer, 240 grain hornady .44 cal and green sabot. At 100 yards all three shots starting from a clean barrel 1 in to 1.5 in spread.
That's a pretty standard load and good medicine for any deer you'll see in NJ, PA or NY. I shoot 100 grains of Blackhorn and the 250 Shockwave, which is the same bullet as the SST.100 grains of Pyrodex and a 250 grain Hornady SST
That is why I quit using 777 and went to Blackhorn 209. It burns much cleaner, but is only available in loose powder.I also clean in between each shot too, because my gun shoots that much better clean. I don't notice a real difference in groups unless I don't clean at least after every 3rd shot