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Reloading Berger Bullets

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new loads

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  #1  
Unread 11-25-2011, 10:03 PM
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Join Date: Nov 2011
Posts: 2
new loads

when working up new loads , I was at the high end and was increasing by .2 of a gr. my jump from 66.2 grains to 66.4 showed my average fps drop by 30. the chrono doesn"t lie. the rifle is a model 70 win in 264 win mag. it has happened before. Anyone have an answer.

Last edited by RICHCAS; 11-26-2011 at 03:30 AM. Reason: to clarify
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  •   #2  
    Unread 11-26-2011, 12:06 AM
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    Join Date: Aug 2003
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    Re: new loads

    I've never seen more powder cause less velocity.
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      #3  
    Unread 11-26-2011, 07:11 AM
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    Join Date: Feb 2011
    Location: Prince George B.C.
    Posts: 195
    Re: new loads

    Not a hot enough primer to ignite all the powder uniformly would be the only reason I can think of that happening. Mind you I would think that it would take a change of more than .2 of a grain to see a drop in MV that much. Mind you I have been surprised before and I'm sure I will be again as well
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      #4  
    Unread 11-26-2011, 10:09 AM
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    Join Date: Nov 2011
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    Re: new loads

    Thank you BMAN73.
    I was considering federal 215m but used up leftover wlrm. I will switch over and see what the difference is. The problem had me confused. You at least came up with a possible answer.
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      #5  
    Unread 11-26-2011, 04:18 PM
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    Join Date: Oct 2011
    Location: Sun City, Arizona
    Posts: 282
    Re: new loads

    could you be more specific about the bullet weight, primer and powder? are you using all the same brass(manufacturer)?
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