RE: Tell me about Jim Shockey powder please.
Yes I'll be shooting only conical (we can use anything else for blackpowder seasons in Colorado). I have tried the RS and it is VERY dirty to shoot out of the triumph. The Select shoots very good groups and is a little dirty compared to 777. the last load I was useing was 85g of Select with a button patch on the end of a T/C Maxi-ball and the same load with a Maxi-hunter and both shot well.
But I you say the JSP shoots at lower velocitys that might be good for the conical, it seems as though if you slow down a conical the grouping stays tighter