Re: Seasoning Brass, any sucess?
I've never tried 'seasoning' or cycling cases as you're describing. But the need is not due to tight clearances. It's due to excess pressures.
I've had a couple reamers/chambers cut to 1thou over new brass -everywhere. It has never been an issue for me, because I keep pressure below a point where it does cause an issue. And this happens to be SAAMI MAX for most cartridges. Not book, but actual. Makes me wonder if case growth beyond normal springback(yield) is actually a factor in determining SAAMI MAX.
I never have and never will FL size, because I mind this.
You can find it at the range with calipers just forward of the webline. As you go up in load you'll see the case grow just a little(about a thou) and settle there. Then as you keep going up, eventually there will be a distinct point where it grows another .0005". This is MAX, the point where brass has yielded beyond springback and will leave an interference fit once the chamber snaps back onto it. It will have to be body sized..
That is MY max, and it's so far coincided with SAAMI(based on calibrated QL indicated pressures).
Anyway, seasoning sounds like it could boost springback to reach a little higher in pressure before excess sizing is needed. Maybe using a FF'ing barrel. Can't see how it would hurt anything.
The PB BR shooters have taken to hone the chamber out to the webline, as much as 10thou over, to avert the interference fit(click). With this they can continue to run excess pressures(IMO), and get by with milder FL sizing(milder than small base sizing).
Last edited by Mikecr; 03-02-2011 at 02:58 PM.