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Thread: Velocity Loss From Summer to Winter.

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  1. #7
    Member
    Join Date
    Dec 2011
    Posts
    125
    Quote Originally Posted by dogmatix View Post
    270 load in 20 7/8" barrel Sako 75

    130gn Sierra Gamekings
    RP brass neck sized
    Fed Match primers
    Warmish load of ADI 2213sc 61.5gn
    OAL to fit mag (71.90mm)

    Chrony results

    Summer:
    3130
    3170
    3123

    Winter:
    2989
    2933
    2919
    2969
    2949

    So quite a difference.
    Thanks dogmatix,
    That was just the kind of stuff I was interested in. (bonus that you use the same powder).

    -So about a 5% loss for you too then.

    -Do you think 2213sc is as temperature-stable as advertised? Or in fact is this quite good stability, and other stuff might be worse?

    Cheers for your help

 

 

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