For target shooting, 7 to 8 gr. of Unique makes a nice mild load that is quite accurate, and won't beat up you or your revolver. I've loaded well over 100K of this load. I like it.

If you're shooting beyond 50 yards, you may want a bit more velocity, for flatter trajectory.

For 240 gr. bullets, I know you can safely go to 10.0 gr. of Unique.