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From: cvedc!pdx.csd.mot.com!brian%nosun.uucp@RELAY.CS.NET (Brian Vandewettering)
Newsgroups: rec.guns
Subject: Re: Silhouette
Message-ID: <34787@mimsy.umd.edu>
Date: 22 May 91 20:32:23 GMT
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In article <34750@mimsy.umd.edu> roc@sequent.com (Ron Christian) writes:
#
#Interesting.  How does a necked cartridge improve accuracy?

I'm not an expert on internal ballistics.  However, a bottlenecked
cartridge generally headspaces on the shoulder giving a better 
alignment between the bore and projectile.  The higher velocity 
obtained by bottlenecked cartridges probably helps to better stabilize
the bullet in flight.

In reading accuracy tests of T/C Contenders fitted with both straight
wall and bottlenecked, the bottlenecked cartridge always won.  My contender
in 7x30 Waters (Necked down  30/30) will group 1" all day long at 100
yards.  I challenge you to find a .357 Mag Contender that will do that.


-- 
Brian Vandewettering - NRA, NRA-ILA, OSSA  -- Opinions are MINE!!!
Motorola Inc., Computer Systems Division - Beaverton, Oregon
brian@pdx.csd.mot.com                 . . .  tektronix!nosun!cvedc!mcspdx!brian