I use 6.4 gr of Unique w/ 180 gr TRN. It puts you nicely into the major power factor. i cant remember the exact muzzle velocity, but when I tested this load I had plenty of room for error on the speed and pressures. Im not sure what handgun you will be shooting, but my limited gun is a G35.
I just bought some of the coated lead bullets from Bayou Bullets. I am just hoping someone has a good place to start from so I don't have to do so much trial and error.