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From: bcstec!iftccu!bressler@uunet.UU.NET (Rick Bressler)
Newsgroups: rec.guns
Subject: Re: 4227 load question
Message-ID: <34877@mimsy.umd.edu>
Date: 25 May 91 05:19:18 GMT
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4227 is a relatively slow powder for pistol bullets.  I've never seen it used
for anything but heavy magnum loads for .357 on up.  I'd imagine that the 
lighter bullets do not provide enough pressure for decent ignition.  The heavier
bullets, probably build a better pressure curve.  I've noticed LOTS of unburnt
powder in light 4227 pistol loads.  While not commonly referred to like cratered
primers, I've always taken this as a sign that a particular combination may
not be completely appropriate.  

Anyway, this doesn't directly answer your question.  I'll try to check 
some of my reloading manuals and see what I can dig up.   I'll email after
the holiday weekend if I can dig something up.

Rick.