I use 43g of BL(C)-2 with LC86 brass out of my M1A. The AP bullets aren't the most accurate thing going, but I get a consistant 1.25 min out to 300m. 400-600m I keep it at 1.5 min.
You can get the military pull down equivalent of the BL(C)-2 from Bartlett reloaders in Owensboro, KY.
go to:
www.GIBrass.com
or call 800-714-6348