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#7097450 - 11/21/12 Question about ballistics chart
wes7x57 Offline
Campfire Regular

Registered: 12/01/04
Posts: 1014
Loc: Jasper, AL
I copied this chart from JBM and had a question. Sorry, I couldn't make it any larger.
With a 100 yard zero. How many clicks would I click up to hit at 450 yards? Assuming 1 click is 1/4" at 100 yards.Please provide the math also.
Thanks



Edited by wes7x57 (11/21/12)
Edit Reason: added info
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#7097472 - 11/21/12 Re: Question about ballistics chart [Re: wes7x57]
mathman Online   content
Campfire Oracle

Registered: 06/03/04
Posts: 25358
40.4 inches of drop at 450

1/4" click at 100 yards corresponds to 4.5 * .25 = 1.125" click at 450 yards

40.4" / (1.125" per click) = 35.91 --> use 36 clicks

If your clicks are really 1/4 MOA then you'd use 8.6 MOA drop divided by 1/4 MOA per click = 34.4 clicks --> 34 or 35 clicks

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#7097493 - 11/21/12 Re: Question about ballistics chart [Re: mathman]
wes7x57 Offline
Campfire Regular

Registered: 12/01/04
Posts: 1014
Loc: Jasper, AL
Thanks!!
It's a Zeiss Conquest 3-9x40 and is marked 1/4" at 100 yards.

600 yards would be 58.2 clicks??
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#7097496 - 11/21/12 Re: Question about ballistics chart [Re: wes7x57]
mathman Online   content
Campfire Oracle

Registered: 06/03/04
Posts: 25358
Looks right.

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#7097509 - 11/21/12 Re: Question about ballistics chart [Re: mathman]
wes7x57 Offline
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Registered: 12/01/04
Posts: 1014
Loc: Jasper, AL
Thank you sir!!
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#7097527 - 11/21/12 Re: Question about ballistics chart [Re: wes7x57]
mathman Online   content
Campfire Oracle

Registered: 06/03/04
Posts: 25358
Just a note: Since that's not a parallax adjustable scope, make sure you're well centered in the sight picture when you zero at 100 and when you go long. Not just consistently positioned shot to shot, but consistently centered.

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#7097530 - 11/21/12 Re: Question about ballistics chart [Re: mathman]
wes7x57 Offline
Campfire Regular

Registered: 12/01/04
Posts: 1014
Loc: Jasper, AL
Good to know. I plan to zero at 200. Would that be better?
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#7097532 - 11/21/12 Re: Question about ballistics chart [Re: wes7x57]
wes7x57 Offline
Campfire Regular

Registered: 12/01/04
Posts: 1014
Loc: Jasper, AL
BTW, I'm not looking to start shooting animals at long range anytime soon. Just trying to get the concept figured out.
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#7097542 - 11/21/12 Re: Question about ballistics chart [Re: wes7x57]
mathman Online   content
Campfire Oracle

Registered: 06/03/04
Posts: 25358
Originally Posted By: wes7x57
Good to know. I plan to zero at 200. Would that be better?


The same principle applies.

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#7097748 - 11/21/12 Re: Question about ballistics chart [Re: mathman]
greentimber Offline
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Registered: 08/04/08
Posts: 2116
Loc: TN
Best thing to do is eliminate inches and clicks from your vocabulary now. Your scope adjusts in IPHY or "inches per hundred yards"

Jbm will output data in IPHY. Re-run your numbers in IPHY. When you adjust your scope, count 1-2-3-One, 1-2-3-Two, 1-2-3-Three, etc. trying to count to 36 or 48, or 162 gets increasingly difficult and is inferior in any regard. Think and operate in relevant units which are IPHY for your scope.
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#7097860 - 11/21/12 Re: Question about ballistics chart [Re: greentimber]
rcamuglia Offline
Campfire Guide

Registered: 06/12/11
Posts: 4152
Most of the suggestions here I've never encountered confused cool


What normal long range shooters do is to range the target, in your case 450 yards, look at your data either taped to your rifle or on a PDA ballistic program, reach up to your elevation knob and dial it from 0 to 8.5

If there's no wind, put the crosshair on the target and squeeze the trigger.

Seems a little easier than any counting exercises.
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#7097886 - 11/21/12 Re: Question about ballistics chart [Re: rcamuglia]
heavywalker Online   content
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Registered: 07/15/09
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Originally Posted By: rcamuglia
Most of the suggestions here I've never encountered confused cool


What normal long range shooters do is to range the target, in your case 450 yards, look at your data either taped to your rifle or on a PDA ballistic program, reach up to your elevation knob and dial it from 0 to 8.5

If there's no wind, put the crosshair on the target and squeeze the trigger.

Seems a little easier than any counting exercises.


The scope in question does not have a turret on it, hence the need for counting clicks. Turrets make things so much easier as you noted.
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#7097934 - 11/21/12 Re: Question about ballistics chart [Re: heavywalker]
rcamuglia Offline
Campfire Guide

Registered: 06/12/11
Posts: 4152
Got it.

Are the "clicks" positive; do they actually click or is it a friction adjustment? Is there a scale marked in MOA on the adjustment or just witness marks? Seems it should be marked, if not, some can be put on with a little "Macgyvering"

Stoney Point makes screw on turrets for Leupolds with coin slots. May want to check availability for the Zeiss.

If nothing is available, I'm sure that the OP will want to eventually get a scope with finger adjustable knobs.
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#7097965 - 11/21/12 Re: Question about ballistics chart [Re: rcamuglia]
rcamuglia Offline
Campfire Guide

Registered: 06/12/11
Posts: 4152
http://24hourcampfire.com/ubbthreads/ubbthreads.php/topics/6444123/3

Check this thread. It applies directly. JeffO's pic looks like the "Macgyvering" I suggested!
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Originally Posted By Bristoe
The people wringing their hands over Trump's rhetoric don't know what time it is in America.

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#7097992 - 11/21/12 Re: Question about ballistics chart [Re: rcamuglia]
heavywalker Online   content
Campfire 'Bwana

Registered: 07/15/09
Posts: 13155
Loc: 40 Years too Late
Originally Posted By: rcamuglia
Got it.

Are the "clicks" positive; do they actually click or is it a friction adjustment? Is there a scale marked in MOA on the adjustment or just witness marks? Seems it should be marked, if not, some can be put on with a little "Macgyvering"

Stoney Point makes screw on turrets for Leupolds with coin slots. May want to check availability for the Zeiss.

If nothing is available, I'm sure that the OP will want to eventually get a scope with finger adjustable knobs.


A conquest has positive clicks, I believe he is just trying to get the concept down at this point. Using what he has and learning with it, rather than spending money on something he doesn't understand at this point.
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Vote out the incumbent

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#7098359 - 11/22/12 Re: Question about ballistics chart [Re: heavywalker]
wes7x57 Offline
Campfire Regular

Registered: 12/01/04
Posts: 1014
Loc: Jasper, AL
Originally Posted By: heavywalker
Originally Posted By: rcamuglia
Got it.

Are the "clicks" positive; do they actually click or is it a friction adjustment? Is there a scale marked in MOA on the adjustment or just witness marks? Seems it should be marked, if not, some can be put on with a little "Macgyvering"

Stoney Point makes screw on turrets for Leupolds with coin slots. May want to check availability for the Zeiss.

If nothing is available, I'm sure that the OP will want to eventually get a scope with finger adjustable knobs.


A conquest has positive clicks, I believe he is just trying to get the concept down at this point. Using what he has and learning with it, rather than spending money on something he doesn't understand at this point.


That is correct. I also plan to make something like Jeff did on his Conquest to play around with.
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