Hi Adam... I was using 85 grains of Pyrodex P, #11 caps, a mixture of 6's n 4's to fill the cup. I'm guessing this would be a 100 grains by volume... but I never bothered to check... I just filled the shot cup, smoothed off the top and poured it into a speed loader.
I took two shots yesterday... one with the turkey load I was using and the split sides down about 1/2" sliced with a knife two sides at a time for four petals. Blast at 25 yards was about 18".
2nd shot with an uncut cup, was awesome... but I can see that if you hadn't just shot one before you could be embarrassed.
I was using felt wads yesterday, but I also use card wads which I prefer over the shot as it is more secure in my opinion.
With my modifed choke and Improved Cylinder, I use 85/85 with clay buster cups and wads under and over. I've never needed more than that for the type of hunting we're doing here, and the BP type tapered shot cup won't go much beyond 2 feet at 40 yards I wouldn't expect and I'd hate to be a turkey... even at 50 yards you're gonna get slapped up side the head...
The gun I'm using is a 12 ga. White, pull to cock hammer, and is straight rifled in the bore with 6 grooves.
Aloha... Tom