Jugornot,
Congrats on the lower SD's. That's the result you get when seating primers correctly and if you handle the cartridges so the powder position in the cases is same for every shot.
The next thing to learn is if your POI and velocity sweet spots coincide. Either
the Audette Ladder (under Incremental Load Development) or
Dan Newberry's OCW round robin can tell you that.
RC20 and Jeephammer,
Have either of you guys applied same-temperature crayon and liquid to a case and verified they turn at the same time in a flame, but not at the same time in an induction annealer? Or at the same time when heated slowly, but not when heated quickly? Since these compounds are basically high temperature waxes, and since, even if there were metal particles in them, the particles would be small and separated by insulting wax and therefore unable to carry eddy currents to make heat (insulated particulate composition is how eddy current heating losses in the ferrite core materials are prevented), it should make no difference other than to thermal conductivity of the material. What I can imagine, without conducting the test myself, is that the dried liquid and crayon would have differing intimacy of contact with the metal surface and differing thermal conductivity. This would result in different response speeds, thus appearing to turn at different temperatures during fast heating when one of them is actually just responding faster than the other can do.
If there is actually some difference, just grind up some Tempilstik and mix into a slurry with alcohol and paint on. Works fine.