Gentlemen-

For my regulating load
I get 2-1/2 drm ffg goex, a card over powder, 1/4"lubricated felt wad, 1/4" lubricated felt 'donut' wad (same as first one, with hole cut in the middle) then the ball in my 16b SxS rifles.
That still gives me a little room before rifling starts.
Sorry no chronograph data. Chronograph has always been fussy or the sky has been 'not so perfect' for good chronograph results when I shoot the 16b rifles.

--Tinker