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6.5 sherman shortmag field test

 
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  #22  
Old 07-17-2013, 04:04 PM
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Re: 6.5 sherman shortmag field test

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Originally Posted by MontanaRifleman View Post
Yeah, the Berger manual seems to be a little conservative. Do you know what barrel length powder they were using for the RUM data? Most guys I see loading the RUM with 210 Bergers and Retumbo are getting in the 3100-3150 range in a 26" barrel. Nosler's online manual shows 3050 with 210 partitions which have a longer bearing surface using RL25 out of a 24" barrel. Not sure why any bullet or powder manufacturer would ever use a 24" barrel for RUM testing?

300 Remington Ultra Magnum — Nosler

The standard 300 WSM powders do produce velocities in the 2950-3000 fps range for 180 bullets. But RL17 really does well in the WSM case and gives me 200 fps more velocity than H4350 with the same pressure. I suspect it will do well in your SS also.

I don't mean to detract from your thread but I thought I would give a little more perspective on the comparison.

Carry on with the good work
Berger manual 26" highest velocity 2945' with H870.......Rich
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  #23  
Old 07-17-2013, 06:58 PM
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Re: 6.5 sherman shortmag field test

I did a little more testing today and played around with the 140 A-Max and RL25 since they shot well in my 6.5 Sherman (long version). It looks as if the Norma brass will work just fine....Rich6.5 sherman shortmag field test-dscf0609.jpg
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  #24  
Old 07-17-2013, 07:50 PM
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Re: 6.5 sherman shortmag field test

Awesome accuracy Rich! Is that the 3150 velocity?
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  #25  
Old 07-17-2013, 08:21 PM
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Re: 6.5 sherman shortmag field test

Did not chrono it but I think 3100' +
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  #26  
Old 07-17-2013, 11:30 PM
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Re: 6.5 sherman shortmag field test

Good shootin Rich, i think you need to come to Townsend this August and you and Rhian can have a shoot off. Have either you or Rhian came up with a BC for the 142 matrix?
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  #27  
Old 07-18-2013, 10:24 AM
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Re: 6.5 sherman shortmag field test

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Originally Posted by barnesuser28 View Post
Good shootin Rich, i think you need to come to Townsend this August and you and Rhian can have a shoot off. Have either you or Rhian came up with a BC for the 142 matrix?
I haven't done any b.c. testing and in fact I am nearly out of Matrix bullets. I talked to Marshal yesterday and he can't get any 160 jackets until AT LEAST Sept........Rich
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  #28  
Old 07-18-2013, 11:10 AM
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Re: 6.5 sherman shortmag field test

He told me he would hopefully have some in by the end of July. Guess not. I am also almost out of 160s
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"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
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