These loads were out of my newstainlessOmega. It appears to have the same 1:28 twist barrel as my Black Diamonds. I have read, but not experienced personally, that round balls shoot pretty well out of fast twist guns with very low charges - like 50 grains or less. This thing with the .50/.430 sabot was on this board a couple of weeks ago. It is my understanding that they were also using fairly moderate charges - like 70 grains - and getting great accuracy. Couldn't resist trying to warm it up a bit . . . .