H110 is a neat powder in that regard. In my 357 maximum TC Contender you could just fill up the case to the bottom of the bullet with any bullet you like. With a 180 XTP seated in the 2nd groove that was 24 grains, which would give 2200 fps from a 13" barrel. Cases fell out of the gun. Of course this is in a gun that can safely handle 223 pressure at this case head diameter, not a revolver.