Leupold Turret Adjustments

Discussion in 'Long Range Scopes and Other Optics' started by Dave58, Sep 25, 2011.

  1. Dave58

    Dave58 New Member

    Messages:
    4
    Joined:
    Sep 22, 2011
    I have VX-3 6.5x20x40 EFR with a 1" dia tube. After boresighting it and zeroing it at 100 yds with factory loads, the elevation turret is at the number "2" line.

    Is this saying that I have only one more complete revolution (15 minutes) until I am out of vertical adjustment?

    Is the only way to get the elevation turret at the "0" line at 100 yards to use shims or a differet base?

    The gun is a 22-250
     
  2. Lyons7STW

    Lyons7STW Well-Known Member

    Messages:
    219
    Joined:
    Sep 7, 2011
    Correct me if I'm wrong but Run it up to see where it stops and you'll know exactly how much adj. Is left. And a base change is the only way I know. I have an aversion to shims on a huntin rifle... perfer things to be solid. I can be rough on one. IMO
    How much you reckon you'll need on such a flat shootin round?
    Maybe one of the experts will chime in soon. I'll stick around we might both learn something.
     

  3. Tikkamike

    Tikkamike Well-Known Member

    Messages:
    4,362
    Joined:
    Dec 26, 2009
    I agree with lyons, I prefer to stay away from shims also. and the only way to know how much you have left is to twist the turret and find out. if your rifle is a factory rifle with the standard 12 twist or something even slower then you can only shoot about a 55 grain bullet anyway. so 15 minutes will get you way past the effective range of that bullet. if you happen to have a slow twist and your shooting heavier bullets then you will have to decide how far you want to shoot but I think your scope should be able to go as far as your 22-250 can effectively.
     
  4. Lyons7STW

    Lyons7STW Well-Known Member

    Messages:
    219
    Joined:
    Sep 7, 2011
    Better explained than my own post but exactly the points I inteded to make.
     
  5. Dave58

    Dave58 New Member

    Messages:
    4
    Joined:
    Sep 22, 2011
    Thanks for the information!
     
  6. Lyons7STW

    Lyons7STW Well-Known Member

    Messages:
    219
    Joined:
    Sep 7, 2011
    Using my own 22-250 load data... a 40 grain V-max at 4100 fps
    My ballistic calculator says 15 moa will get you out to 750 yards
    She is barely supersonic at 1250 fps
    And only has 138 ft lbs of energy left
    With the 22-250 speed kills so this is as mike said near max effective range on my rig.
    With more data I could try and help further.