Yes nice accuracy!
How do those 0.678" RB's fit in the Helix cushion drivers... in the bore?
I have to recheck but I am sure mine were a snug fit in Pacific Verelite wads that I had a bag of (now almost gone) but they are a bit loose in my Winchester and Claybuster wads so I've taken to using a wrap of paper. Actually one wrap for my Mossberg slugster and 2 wraps for my fat bore single shot. Got to test both loads and guns side by side to see if it makes a difference.
I'd prefer to load for the largest bore and have things squish down for a tighter bore or moderate choke... as long as it shoots well.
Yes, too many variable and components! Too many powders, too many wads, too many hulls, too many primers, too much "stuff" to have all of it to match many recipes! I think Randy has the right idea... load like birdshot loads at moderate pressure with reasonably fast powders like Green Dot. Maybe not the highest velocity but if it shoots well and the powder can be used in multiple hulls and with multiple wads it makes like so much easier! If it wasn't so dirty I'd be happy using BP and have though about subs for slugs. In fact I used to have fun loading 0.690" RB's over up to 4 drams of BP. Accuracy wasn't very good but that was the loose RB. With good fit it would work.
I like the slug/RB in shotcup because they are easy to load and seem to produce quite decent accuracy easily. I think a naked full bore ball may have a tendency to roll when opening a crimp and or jumping through the forcing cone. As msm noted, I have seen uneven "belts" around recovered 0.735" RB's though they seemed to shoot well enough.
Yes... COW doesn't = cow http://castboolits.gunloads.com/atta...6&d=1549038592
COW = Cream 'O Wheat. Th eSouthern boys like Hogtamer like grits better. To each his own!
I'd have trouble squeezing a cow into a shotcup I think! Pretty easy to put a small scoop of COW into a shotcup though.
Longbow