I picked up a jug of RL23 recently and loaded up some 168 Custom Competitions with it today. Data is basically non existent, I extrapolated from Alliant's online guide for the Speer bullet. 75 grains came right up to the bottom of the neck and seating at 3.34" produced a slight crush. The group is 5 shots and includes the clean cold bore shot. I know it says RL22 in my photo, but it is RL23. Primers looked fine, but I did have some sticky bolt lift. I put together some more loads at 74 and 74.5 grains to see if I can avoid the sticky bolt lift. This particular gun hasn't shown any copper fouling in the past. Today I ran 25 rounds through it and didn't see any trace of copper on my patches. I haven't used any other decoppering powders in the past.