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7MM Rem Mag, H4350, and 154gr SST's starting point?

 
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  #8  
Old 06-13-2013, 10:04 AM
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Join Date: Dec 2004
Location: Ar.
Posts: 102
Re: 7MM Rem Mag, H4350, and 154gr SST's starting point?

Quote:
Originally Posted by Clark View Post
Some of my measurements:

150 gr Ballistic tip moly 3.4" 66 gr H4350
3259 fps
3375 fps
3333 fps


Work up
Hodgdon web site:
162 gr HDY SPBT H4350 3.290" 58.0 gr 2799 fps 49,400 CUP

My work up H4350 162 gr interlock moly 3.34"
62.8 gr ok difficult primer insertion
65 gr ok difficult primer insertion
66. 5 gr ok difficult primer insertion
67.0 gr ok difficult primer insertion
67.5 gr easier primer insertion ...end work up


What does it all mean?
Backing off 4% powder charge from highest long brass life load would be 64.3 gr which is 11% higher than max published load.

There are white lies, lies, damn lies, and then there is 7mmRM published load data.
Published load data isnt for moly bullets its a whole differant ball game.Which I'm sure you know just throwing that out there.
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  #9  
Old 06-14-2013, 07:17 PM
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Join Date: Oct 2009
Posts: 250
Re: 7MM Rem Mag, H4350, and 154gr SST's starting point?

What did your book(s) say? sorry guys.
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  #10  
Old 06-15-2013, 08:27 AM
Edd Edd is offline
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Join Date: Jan 2011
Location: Tulsa
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Re: 7MM Rem Mag, H4350, and 154gr SST's starting point?

Quote:
Originally Posted by Clark View Post
What does it all mean?
It means you should be using H1000.
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  #11  
Old 06-15-2013, 11:12 PM
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Location: Boise, Idaho
Posts: 473
Re: 7MM Rem Mag, H4350, and 154gr SST's starting point?

I shoot a 280 Ackley Improved, it seems to like IMR 4350, H4831SC, H1000 and Retumbo. A friend uses Ramshot magnum powder.
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  #12  
Old 06-16-2013, 11:48 PM
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Join Date: Jul 2012
Location: Thornton, colorado
Posts: 5
Re: 7MM Rem Mag, H4350, and 154gr SST's starting point?

Here is the pic of the best results i had. I estimate the speed to be closer to 2900 than 3000...just guessing as i did not have a chrony at the time. should have stopped at the 3rd shot. pretty sure the 4th one was because of me and not the load.
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7MM Rem Mag, H4350, and 154gr SST's starting point?-img_2914.jpg  
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