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Reloading Berger Bullets

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faster 1st shot ??

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  #1  
Unread 10-13-2006, 04:32 PM
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faster 1st shot ??

While at the range I´ve seen that my first shot is faster than the subsequent ones, i.e., 1st is 3050, 2nd, 3rd.. at about 2950 ft/s...

Rifle has not been recently cleaned, and this has happened with 160 accubonds and 154 sst´s out of a 7 rm.

Anyone know why, or is it that the chrony wakes up with the first shot [img]/ubbthreads/images/graemlins/wink.gif[/img]???
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  •   #2  
    Unread 10-13-2006, 07:33 PM
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    Re: faster 1st shot ??

    That's odd because I have always noticed exactly the opposite. First 1-2 rounds record noticeably low velocities before they settle down at the higher average velocity.

    I do, however, always start with a clean barrel.
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      #3  
    Unread 10-13-2006, 08:41 PM
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    Re: faster 1st shot ??

    I typically see a slower first round coming from a clean bore as well. I'll typically see about 3166, then 3190-3210 then stabilizing at 3220-3230 something for a few rounds until its starts to get too dirty.
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      #4  
    Unread 10-15-2006, 01:23 PM
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    Re: faster 1st shot ??

    That´s why I dont know what´s going on.... [img]/ubbthreads/images/graemlins/confused.gif[/img]
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