Yep Jim I brought one about 18 months ago a Annealing Made Perfect (AMP) machine that uses adjustable settings for different makers of brass including neck turned up to 3 thou off it does a fantastic job.
The Lapua brass changes colour a bit in the 308 but in my 6.5 x 284 not so much been caught a few times by accidently picking up one done a bit earlier to move it and ended up with a nice index finger pad burn.
The RP 303 brass it really looks nice with the blue ring at the bottom just past the shoulder, if I have a piece of worked brass and then anneal another the same and you looked at them from the top the brass with a light from behind you the annealed one has that dull golden colour of brass and the hard worked one looks like brass thats been highly polished.
It was not cheap but has certainly saved allot of split necks in my RP 303 cases along with my wifes 308 brass its well worth it although now I see they are going for $2007/AUD which is quite a few 000 more than I paid if anyone near you has got one see if they will do a fifty odd rounds for a six pack of beer (Universal payment plan)for you so that you can see the difference tell them if you neck turn so they get the right setting lest they cook your brass.