10 gr 2400 gets me 1090 fps with my 6 inch Model 19, 8.2 gr of AA #5 runs 1134 through my 61/2 inch Blackhawk. Picked up a pound of IMR 4756, will give it a try, in my 38 special loads 4756 appears to burn much cleaner than any powder that I have tried so far.
