20ga 2 3/4" 3/4oz Cheddite hull recipe??

[C.O.B.]

Craig I'm using 20/28 powder with the CB wad in the 2 1/2 RST hull. I use Win 209 primers. I can weigh a powder charge for you if you wish. I used Unique in the 20ga with the AA hull but haven't loaded one of those in decades.

[Double Lab]

Craig, not a tested recipe but I've loaded the Claybuster 3/4oz wad in both 12 and 20ga in straight walled hulls (ie. Cheddite, Fiocchi, RST, etc.). I'd have no problem throwing 15-15.4gr Unique with the CB 1075-20 wad and your Rem209 primer. I see the pressure at 8000psi or less. Before I found 20/28 my go to powder was Unique and 4756. 20/28 gives a lower pressure at the same velocity and calls for one grain less.