Matt -
Tom and I had that discussion the other day, and we were both in agreement, based on your success' with the 300-WSM, that there is no doubt differences from one cartridge to the next. Regardless, think we all are in agreement both ways can and have worked.
Myself, I desire to have all the brass in a set annealed to the same hardness, and to that same hardness every time I anneal that set. This is the first company that I have seen to be conforming and calibrating there machines to that same principal.
Will it be better? we won't know that until it has been proven out in the hands of a couple of us.......
I stopped trying to get annealing to work because I do not believe I was able to get my sets annealed to the same hardness every time, like I felt I needed to.
Induction annealing has intrigued me for several years, but hadn't seen a marketed unit, until Amps, that tripped my trigger. There mini-vickers hardness testing and calibrating the induction to maintain one hardness parameter, points positives to my own desires.
Donovan