Found the Trail Boss, and my Midway order of Krag dies and 200gr Oregon Trail cast bullets arrived, and now I've got 20rds loaded up for testing. Trying 11gr-12.5gr of Trail Boss in half-grain increase, 5 round batches, as well as slightly stouter .30-06 loads using the same bullet. Now if I could just get the weather to cooperate, and I can go test these loads out. Right now, I'm looking at 6 inches of snow, with more coming down.
Hopefully tomorrow I can test 'em, and let y'all know if I blew up my Krag or not.