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Help me interpret this Berger VLD COL test?

Discussion in 'Handloading and Reloading' started by Onewolf, Feb 16, 2013.

  1. Onewolf

    Onewolf New Member

    Jan 2, 2013
    Central Florida
    I am a newbie at handloading and I need some experienced opinions on how to interpret a COL test. I just started handloading at the beginning of this year so I have A LOT to learn! As a bunus I just started shooting a rifle in November last year so I have a lot to learn there as well. :eek:

    I attempted to perform a COL test for Berger VLD 140s this morning with my Savage Long Range Precision 260. I had previously determined that for my rifle a Berger VLD 140 'in the lands' seemed to be COL 2.930" so using the method prescribed by Berger I made four sets of rounds (5 rounds per set) at COL 2.930", 2.890", 2.850", and 2.810".

    I had a failure to chamber (my first!) on one of the 2.850" rounds. Chalk that one up as a lesson learned.

    I shot these groups at 200m using a bipod and rear bag.

    The group sizes were:

    2.810" = 0.733"
    2.850" = 0.423" (only 4 rounds)
    2.890" = 1.248"
    2.930" = 0.874"

    My (ignorant) analysis of this target is that the rifle does not like 2.890", it _might_ really like 2.850", and it doesn't seem to mind 2.810" or 2.930".

    Do you draw any conclusions from this target?
    Should I repeat the same test?
    Or should I try a test with rounds with COL 2.830", 2.840", 2.850", 2.860" to see if the 2.850" is an anomaly or not?

    Any advice is much appreciated.

  2. 30Cal

    30Cal Senior Member

    Feb 11, 2004
    Albany, NY
    2.930" and 2.850" look like the best groups to me. It's really hard to call it on a single set of 5rd groups. I'd check both of those again (or just pick one).
  3. JLDickmon

    JLDickmon Active Member

    Mar 15, 2012
    Comstock, MI
    kinda hard from one set of groups, but I'd say that rifle likes that 2.810 OAL

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