old colonel,
Do you have the details of the case and bullet worked out yet? If so I suggest using 5744 and asking the powder manufacturer for a starting load, which will likely be somewhere around 26 gr.If you don't mind that "nasty old black powder"( vic are you there?), you can use a case full( if the rifle is nitro proofed, I wouldn't use black).Trail Boss has some applications also,but velocity may be low.I'm "old school",and since I still have Unique,Red Dot,and 4198; I still use them, but am switching to 5744 as I aquire different guns.
Mike

Last edited by Der Ami; 04/02/13 10:36 AM.