DRJ,

I was not aware that Ross listed the diameter of the projectile used in his DGJ article. I will take another look tonight.

Just a guess, but I personally would start with .736" or smaller and Sherman's Unique loads listed in his latest DGJ Paradox article. Most modern Fosbery moulds throw slugs @.740" so you have that diameter as a backup. Also a guess, but you may get higher velocity with the same loads in your Colindian. When My loads were tested, they produced higher velocity from the .727" test barrel (+100 fps). I think the undersize slug in the paradox bore slows things down a little???

If Unique does not work, I can help with Blue Dot loading info. My Evans (paradox) is a 28 grain gun and likes Blue Dot best.