Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!uakari.primate.wisc.edu!aplcen!boingo.med.jhu.edu!haven.umd.edu!mimsy!bevsun.bev.lbl.gov
From: bercov@bevsun.bev.lbl.gov (John Bercovitz)
Newsgroups: rec.guns
Subject: Re: To trim or not to trim auto pistol brass
Message-ID: <35664@mimsy.umd.edu>
Date: 14 Jun 91 20:05:56 GMT
Sender: magnum@mimsy.umd.edu
Organization: Lawrence Berkeley Laboratory, Berkeley, California
Lines: 22
Approved: gun-control@cs.umd.edu

In article <35600@mimsy.umd.edu> boyd@mailer.cc.fsu.edu (Mickey Boyd) writes:
#However, this may also imply that by using "correctly" sized and lengthed
#brass you may get more consistency (ie accuracy, never mind where you would
#get this brass).  Anybody tried this?

I've tried it - with 45 Win Mag brass.  The only trouble with using this
case as a starting point is that you have to thin out the neck walls where
the bullet goes because after you shorten the brass, the bullet will seat
in the thick-neck area of the case.  You may not have this problem if you
start with Detonics cases because they're only a little bit longer than
45ACP brass.  I've never tried Detonics cases fearing that they're probably
expensive and hard to come by.  Do remember that case capacities will vary
with different constructions.

As far as getting a more accurate load by using this brass - well, I haven't
been able to detect it.  That's what I wanted, but I didn't get it.  I have
a very tight Gold Cup and it didn't know the difference out of the Ransom Rest.

I do sort my brass by length though.  This way I get a consistent taper
crimp.  I believe that that helps though I've never done a rigorous test.

      JHBercovitz@lbl.gov    (John Bercovitz)