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  1. #1

    load development shooting distanpce

    Best distance to test loads with a long range 300 rum

  2. #2
    LRO Owner ~ Review Editor ~ Long Range Hunting Specialist Broz's Avatar
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    Quote Originally Posted by Jess cooper View Post
    Best distance to test loads with a long range 300 rum
    200 yards is a good number if you have access to a 200 yard range. However I always zero my LR rifles at 100 to remove the environmental effects from the firing solution.

    Jeff

    EDIT to Add: I do a lot from 100 too, but prefer longer when time and conditions permit.
    Last edited by Broz; 01-14-2019 at 15:11.

  3. #3
    Different ranges for different parts of the testing for me. I zero at 100. Ladder test at 600. After a 600 ladder, I always find a good node to work with. So far that load has always shot very tight at 100. You can always play with seating depth at that point to further tweek things
    Last edited by odoylerules; 01-14-2019 at 12:40.

  4. #4
    What size of grouping is acceptable at 200 I have always shot my groups at 100 . Right now I have a 200 gr accubond grouping at 1/2 inch 9q.5 gr retumbo 3125fps how will that bullet setup perform out to long range

  5. #5
    Quote Originally Posted by Jess cooper View Post
    What size of grouping is acceptable at 200 I have always shot my groups at 100 . Right now I have a 200 gr accubond grouping at 1/2 inch 9q.5 gr retumbo 3125fps how will that bullet setup perform out to long range
    In theory, a 1/2" group at 100 should be 1" at 200. Twice the distance twice the size. But the further out you go, the more error is introduced into your groups. So most guys shooting 1/2 MOA groups (or half inch) at 100 yards, are not going to put down a 1/2" MOA (or 2 1/2") at 500 yards.

    That being said, if you with this load and rifle can hold at or under 1 MOA at any distance, your doing just fine.

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  7. #7
    ELR Field Editor
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    I can't speak for anyone else, but my experience has been that what shoots at 100 yards, doesn't always translate to long distance, so I use 100 yards only to do velocity and pressure testing (and installing a scope). I use 400 meters to do general load development (if the conditions permit; 300 meters if 400 is too spicy). I shoot a single group (3 or 5 shots) verification @ 800 meters. If it shoots the same at 800 as it did at 400 (e.g. sub 1/2 MOA), I'm done. For me, if it shoots at 400 meters, verified by 800, it shoots out to 2,500 and beyond.

    Jeff

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