I never use it in 32, but have in 45 Colt, 38-55, and 20 & 12 gauge all brass hulls. I like the easy clean up. Velocities run just below black powder (FFg vs FFg) for equal volumes.

When shooting Black Powder, dropping the fires cased in water stained them pretty bad, so I started using blue windshield washer fluid, I don't know if that is necessary with Clean Shot, but I do it anyway and they are very shiny the next day, when I deprime and start drying them out.

All my Clean Shot and BP loads are done by volume, not weight. I usually use a muzzle loader powder measure. So my 12 gauge load is 95 or 100 grains by volume, the actual weight always seems to be around 10% less. This is probably the velocity difference you are experiencing.

Ivan