I use this method, with some 750 Tempilaq. I just put a little on the inside of the case neck of 5-6 pieces to get a average count.If you have a variable speed drill and a socket chuck that you can attach a deep well socket to along with a butane torch, you're pretty much set! You can pay the money for an actual annealing machine, but this method works well for me and many others who showed me how to do it.
You will want a socket that is deep enough for your case to set into and have an area about 1/4" to 3/8" below the case neck/body junction exposed (pending on the case length), have your drill set to turn roughly 70 to 100 rpm's, using the butane torch heat the case neck/body junction just enough to see a color change . . .DO NOT MAKE IT GLOW! ! ! On 6.5 Swede, .308 Win and 7mm Mag brass I will usually give it a 12 to 15 count and then splash it in water. You will just have to experiment with it to get the flame distance and hold count to your liking.
+1I love my Benchsource, works great and is quite fast. I just let the brass drop into the blue box Lapua brass comes in. its very easy to set-up and gives great consistent results.