New to dialing turrets....question

Discussion in 'Long Range Hunting & Shooting' started by JMack, Jan 14, 2019 at 9:44 AM.

  1. JMack

    JMack Well-Known Member

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    got some range time in yesterday....have new Leupold vx6hd and after testing some loads at 100 I decided to send a few down range at steel. 180gr Sierra pro hunters .308 cal out of my 300win. I’m guessing at the velocity around 2850 based on my powder charge. Anyway I ran the numbers thru a ballistic call that told me I needed to dial 11 clicks for 300 yards if I was zeroed at 100, which I am for now. I dialed 11 and shot high, dialed 9 shot high, 6 high then 4 bingo hit at 300. I could see the hits high in the snow covered backstop. I then shot 400 by dialing to 6, the hit 500 by dialing to 9.

    Did I type something wrong into online ballistic calculator, because the numbers it gave me were all way too high?

    I’m relatively new at dialing I’m switching from holdover reticles.

    Thanks
     
  2. davsco

    davsco Active Member

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    you want to chrono and not guess on your velocities, they make a big difference. also check your sight height over bore (measure from centerline of scope to centerline of barrel) and your bullet's ballistic coefficient. and double check what your 'clicks' actually are and that your ballistic calculator has them entered correctly.
     
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  3. davsco

    davsco Active Member

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    and yeah you're off by almost a factor of 3x (11 spec'd vs 4 actual) so you have something mixed up, prob more so than velocity. double check what you have in your calculator for moa or mil and that it matches your scope, and also check what you have in there for #clicks per moa or mil and that it matches your scope.
     
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  4. JMack

    JMack Well-Known Member

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    Thanks I’ll go back and check everything with the calculator. I’m planning on running my pet loads thru a chrono.
     
  5. BULLBLASTER

    BULLBLASTER Well-Known Member

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    Were you counting actual clicks? Or reading the markings on the elevation dial?
     
  6. JMack

    JMack Well-Known Member

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    Reading the markings
     
  7. Dr. Vette

    Dr. Vette Well-Known Member

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    Did you ever verify beyond 100 yards?
    If not, it doesn't take much error at 100 to start being off at 300.
     
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  8. JMack

    JMack Well-Known Member

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    No this was my first time actually taking it past 100. I used it this past hunting season for deer but my shots are 100 or less, mostly 40-50yards. So Sunday was my first trip to my local 500 yard range and after some load testing I decided to send a few with the extra ammo I had loaded for hunting season.
     
  9. BULLBLASTER

    BULLBLASTER Well-Known Member

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    The markings on the scope dial are in moa. Your calculator was giving you clicks.

    Per your 300 yard example you mentioned 11 clicks as your output but actual impact happened at the “3” marking on the turret. Which would be 12 scope clicks. Remember there are 4 clicks per moa, or 4 clicks per numbered marking on your scope dial.

    Dialing to 9 for impact at 500 yards seems reasonably close also for your 180 grain bullet. That would be 36 clicks.
     
  10. JMack

    JMack Well-Known Member

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    This makes sense as to what happened. Thanks for explanation
     
  11. JMack

    JMack Well-Known Member

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    That said this scope will really get me out there. Wow
     
  12. alf

    alf Well-Known Member

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    Also, stop thinking/using clicks, use MOA for ballistics & drops. You'll go crazy trying to count 48 clicks when 12 MOA gets you there in 2 seconds.

    Example....when the chart says 11 1/2 MOA, dial to 11 and add 2 clicks, & shoot.
     
  13. JMack

    JMack Well-Known Member

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    Good point
     
  14. snox801

    snox801 Well-Known Member

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    Yep these guys got you covered. I see it a lot with newer guys going past 100. Easy mistake. Also you see how quick a bit off left and right will get you at distance