I use Herco - bought 5 pounds of it @10.00 each as a clearance powder at a local store a couple of years back - I should have bought all of it. I found it produces amazing velocities in .45 ACP and is usefull in 38 spl., 9mm, 45 colt, etc.) meters like Unique, but just a littler slower burn rate. Flake type powder is not too bad to dispense if you use it in a quality measure (i.e.: do not use in Lee craptacular measures). Not so dirty as to bother me. Did I say amazing velocities?