the final picture of the zeus - a back lit close-up look into the bores - appears to be a much faster twist than that in the m-f supra barrel....really going to give things a whirl.

the supra barrel turns less than a full revolution in the 70cm barrel length. it would seem likely that the faster the twist, the more pronounced the dispersal of shot would be....and it also occurs to me that there would likely be some difference between a shell built with typical one piece plastic wads, and one using a built-up wad column with shot charge bearing directly on the barrel walls.

best regards,
tom

"it's a poor sort of memory that only works backwards."
lewis carroll, Alice in Wonderland