Proper Brass Length

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jesilva
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JoinedCOLON Wed Nov 11, 2009 3:38 pm

Proper Brass Length

Post by jesilva » Sun Sep 18, 2016 2:48 pm

How closely should the brass in a straight walled case match the length of the chamber

Kurt
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JoinedCOLON Mon Nov 21, 2005 8:05 am

Re: Proper Brass Length

Post by Kurt » Sun Sep 18, 2016 2:51 pm

I keep my unsized cases .005" short of the chamber so they don't get pulled over the end and into the throat

jesilva
PostsCOLON 5
JoinedCOLON Wed Nov 11, 2009 3:38 pm

Re: Proper Brass Length

Post by jesilva » Sun Sep 18, 2016 2:55 pm

So, lets say in a 45-70, do you have to trim 45-90 brass to achieve the desired length.

Kurt
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JoinedCOLON Mon Nov 21, 2005 8:05 am

Re: Proper Brass Length

Post by Kurt » Sun Sep 18, 2016 4:05 pm

No I haven't trimmed .45-90 cases for the .45-70. If I want to grow them slightly I anneal them and roll a slight crimp and that does the job. It gets to be a feel how tight you roll it. I have gone to far before I got it right and stretched the .45-70 Rem brass to 2-7/8" :D

TexasMac
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Re: Proper Brass Length

Post by TexasMac » Sun Sep 18, 2016 6:42 pm

My general rule of thumb is to keep it within 0.010" of the chamber length. Rather than use Kurt's method to stretch brass I prefer using Tim Smith-Lyon’s case stretcher which is available directly from Tim or Buffalo Arms. See my article at
http://www.texas-mac.com/Lengthening_Sh ... amber.html

Wayne
NRA Life (President's Council) Member, TSRA Life Member, NSSF Member
Click on http://www.texas-mac.com/index.html to my home page containing information on my Browning/Winchester BPCR book & associated articles.

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