Re: Annealing
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Robert Murphy</div><div class="ubbcode-body">Normbal, if you dont mind what are the times you use for your .223 and .308? I use an ultrasonic cleaner for my cleaning, should this be done prior to that and then dumped from the heat into the ultrasonic? Does the rapid change in temperature seem to make any difference in the process or should they cool at room temp? The way I am understanding it is this should be the first process in my reloading steps after deprime?
Alos on another note, I notice people talking about bumping the shoulder back. I am just getting into precision .308, but with my .223 I would clean, trim, neck size only, chamfer, prime, load, and seat. How are you "bumping" the neck, how do you know its enough, whats recommended, and what is the purpose? </div></div>
1 - Times I came up with using 650 degree tempilaq PAINT-on (the stick doesn't stick to clean brass) are as follows:
.223: 6 seconds
.308: 7 to 8 seconds.
.338 LM: 9 to 10 seconds.
In my head I'm doing 1 mississippi 2 mississippi or just tapping my foot (I do some jazz drumming as a hobby), but having TIMED it against the Tempilaq, I watch for the color band going down the body of the case and know where it should stop at the right time so I have two data points to go by.
2 - sequence I follow is: deprive, clean brass (using the stainless steel pin/wet system right now and highly recommend it, I've never seen brass this clean), anneal, THEN full-length size it. I know it's right because I use a wilson (or Dillon) case gauge and adjust my press until I get the exact spec I'm looking for.
THEN I do the primer pocket squaring, flash hole debarring, and trimming (I use a Giraud trimmer).
Funny, I've read about a lot of people who do the anneal/sizing in reverse, sizing THEN annealing.
I do it the first way as I find the brass won't fit in the Giraud trimmer case holder. Chambers okay, I can trim it on an older hand-cranked tool, but the dimensions have changed just enough it won't fit the Giraud unit.
Rapid cooling doesn't affect annealing of brass. Steel, other metals/alloys, yes. Not brass. Dump it in a bucket. I set the cases in a garbage can lid and put the whole thing in the garage freezer when I'm done, long enough to cool.
YMMV.