Bill,

Do you mean an RST hull? If so, this is a Cheddite hull. I use the following for any Cheddite hull:

15 gr 700x
Cheddite primer
BPI Competition Special wad
3/4 - 7/8 oz shot

Approximately 1,140 fps and 5,300 psi.

Phil

Last edited by Philbert; 12/31/12 12:09 PM.