OR buy The Annealing made perfect machine. They now have "Aztec" mode, which toasts a case, but gives you a program# (temp and dwell) to consistently anneal any brass.
For each subsequent annealing of that brass, you punch in the number and go.
They are pricey, but I know some guys who have gone together to purchase one, and we have one at our range for anyone to use.
I can perfectly anneal 50 pc of brass in 5 minutes (including set up).
Consistency shows in sizing, seating, runout, and down range.
my $0.02.