I have cast up a bunch of 130 grain LEE GC boolits and have been looking for data to load them to around 2300-2400 fps. I have found slower and faster loads but don't know which powders I could safely reduce to get approximate velocities without getting detonation and blowing up. My lead recipe was 3/4 recovered range lead with 1/4 linotype. Put together a scout - truck gun on a Mauser 93 action.