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Old 11-14-2009, 05:23 PM
T.D.C. T.D.C. is offline
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Default Thinking out loud, scope mount..

I am ging to be swapping a scope, using the existing reings. Rather than starting from scratch with a new scope is it practical to take a reading with my boresighter with the existing sighted scope and apply that to the new scope? I dont expect spot on but hopefully on the paper at 100.

Thoughts?
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Old 11-14-2009, 06:37 PM
TinMan TinMan is offline
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I would zero the new scope and start from scratch, personally. If your current scope is set up off center and you are internally adjusted way to one side, you will just be transferring that to the new scope with a bore sighter.
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Old 11-14-2009, 08:29 PM
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gonedawgn gonedawgn is offline
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I'd sure try it. Never had one too far off paper. Has to be as accurate as the magnet dodads that you hang on the front of the barrel. And you can check it by boresighting in any case.
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Last edited by gonedawgn; 11-14-2009 at 08:29 PM. Reason: typo
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Old 11-14-2009, 09:40 PM
dan in minn dan in minn is offline
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When I get a different scope (used one) I turn the turrets all the way to right then count to the left and set it in middle. It usually gets you on paper.
Dan
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Old 11-14-2009, 09:40 PM
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Chris K. Chris K. is offline
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I've done it before and ended up only 1/4" off from the previous scope at 100 yards. Being very exacting is the key. I used both a collimator-type and laser boresighters to reinforce the readings.

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Old 11-14-2009, 09:59 PM
OrneryCuss OrneryCuss is offline
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Quote:
Originally Posted by T.D.C. View Post
I am ging to be swapping a scope, using the existing reings. Rather than starting from scratch with a new scope is it practical to take a reading with my boresighter with the existing sighted scope and apply that to the new scope? I dont expect spot on but hopefully on the paper at 100.

Thoughts?
Short answer:

YES!

You will be able to get a much more accurate initial bore sighting of the new scope based on the zero of the old one by doing that vs. any other method.

It doesn't matter what rings or base you use or where your previous scope is as far as turret positions. A Zero is a Zero. You will end up at the same point your previous scope was anyway so you might as well save some time and get as close to it as you can with the bore sighter. You can't get there by counting clicks on the new scope as the relationship between the reticle and the tube body is not going to be exactly the same for both scopes.

Last edited by OrneryCuss; 11-14-2009 at 10:07 PM.
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