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- From: hes@unity.ncsu.edu (Henry E. Schaffer)
- Newsgroups: rec.guns
- Subject: Re: Loading data accuracy?
- Message-ID: <1993Jan1.010624.18121@ncsu.edu>
- Date: 1 Jan 93 14:38:55 GMT
- Sender: magnum@mimsy.umd.edu
- Organization: North Carolina State University
- Lines: 28
- Approved: gun-control@cs.umd.edu
-
- In article <1992Dec31.173521.8970@henson.cc.wwu.edu> n9020351@henson.cc.wwu.edu (James Douglas Del-Vecchio) writes:
- # ...
- #BTW, in .45 ACP the max suggested loads/vels for fast powders like BE
- #and 231 seem to be below even the standard vels for non +P factory
- #for some bullets in some reloading guides.
-
- At least part of the reason is that Bullseye and W231 are two of the
- fastest burning powders available and therefore could cause very high
- pressure levels if too heavy a load is used. A slower burning powder
- will not rise in pressure as fast, and will keep burning a bit longer
- and can give a higher muzzle velocity without having any higher a
- pressure. An extreme example of this is seen when comparing Bullseye
- with 2400, which is a rather slow pistol powder. With a 158 gr. JSP
- bullet in a .357 Magnum
-
- Powder gr. MV psi
- BE 6.8 1,250 33,100
- 2400 15.2 1,535 33,100
-
- in which the pressure is the same but there is a whopping 285 fps
- difference.
-
- In general Bullseye is not recommended when high velocity is
- desired.
- # ...
-
- --henry schaffer
-
-