SidecarFlip, I wish you were closer to me. We would have a little annealing get together and you would then know if the Bench Source machine was for you or not.. I had 3 wheels with my Ken Light and changing them was not bad if it were not for they are filled with water and you have to figure out how to drain that gracefully,,, good luck with that. But the real difference in preformance between the KL and the Bench Source is where the case actually stops on a seperate little table in the flames and spins for an adjustable length of time. This ensures that the case gets even heat all the way around. I would never go back. Plus the torch adjustments are far superior in the Bench Source in my opinion. I also do .338 LM and 300 Win. both in Lapua brass. The 300 win Lapua brass in no longer made and I cherish it. So we anneal every firing or at least ever 2 firings. My .338 LM brass is getting readdy for it's 14th loading, all firings have been with 300 gr bullets.
I did some 338-378 brass for a friend a while back and took pics drring the process. Thought you might enjoy them. I drop hot cases on a damp towel to cool. Take a good look at the finished results and the consistant heat transfer line. Pics often speak louder than words.