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-   -   338BR/338 Whisper noob questions (http://www.quarterbore.net/forums/showthread.php?t=4374)

Spook 01-17-2011 10:14 AM

or,.... you can cry once, buy Lapua 6BR brass, trim it to length and have brass you'll be able to pass down to future generations.

Going the reform route...you may or may not be successful. I had a bad experience reforming Lapua 7.62 X 39 into a 22 cal shorty....it was almost like the brass in the body of the case had memory...

You might want to read up on annealing.

I cant say I didnt have fun wasting a few hundred cases. :smile:

Romeyo 01-17-2011 12:03 PM

Memory brass... now that would be cool. No more resizing ^^ Who knows, maybe in 10 Years all cases are made out of some super durable, reloader friendly memory polymer...

So you think annealing might be necessary before running the case trough the resizing die (and maybe even in between running a case multiple times through that die before ever comin to dersired specs)?
Well, I got a propane torch in my workshop, lets see if i'll need it...
Thanks for the 6mmBR brass tip. I'll try it if .308 palma brass protests against my plans..

Martin

Spook 01-17-2011 03:01 PM

Quote:

Originally Posted by Romeyo (Post 26384)
Memory brass... now that would be cool. No more resizing ^^ Who knows, maybe in 10 Years all cases are made out of some super durable, reloader friendly memory polymer...

So you think annealing might be necessary before running the case trough the resizing die (and maybe even in between running a case multiple times through that die before ever comin to dersired specs)?
Well, I got a propane torch in my workshop, lets see if i'll need it...
Thanks for the 6mmBR brass tip. I'll try it if .308 palma brass protests against my plans..

Martin

Well...since you asked me what I think. I think you'll never be able to make brass as good as you can buy...using the approach you've described...and you're handicapping any edge you might've gained on accuracy... by using 6BR brass.
It'll be interesting to hear what your conclusions are at the other end. Best of luck with it.

Romeyo 01-18-2011 05:37 AM

I might try out both techniques to find out if its worth going the 6mmBR way.
How many cal. expenders would you recommend for the necking up process? 7mm, .30 (and .338) I guess?

I think I'll be able to share results somewhen in may to june since I'm just doing research at the moment because of lacking the money for such a project right now (unfortunately it's not the only expensive hobbY I got :rolleyes: ).
However I already got a promising "baseline"... a Savage SS target action :smile:

Martin

Spook 01-18-2011 10:17 AM

I go to 30 then 338 . If you get 7mmBR brass it goes in one jump with a 10% loss.

amafrank 02-24-2011 11:36 PM

I've just expanded and sized a bunch of 7mmBR cases with a CH4D die/expander and it works quite well. I haven't lost any yet but I expect to. I'm going from 7mm to .338 in one swipe.
I finally got a barrel blank ordered. Now I just need to decide whether to use the Mk X Mauser action or maybe just finding a CZ or Rem 700 action.

Frank


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