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dialing in question

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/16/2012 at 09:10
ahiaring View Drop Down
Optics Apprentice
Optics Apprentice


Joined: January/21/2011
Location: Boise Idaho
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I know a second focal plane scope Usually have to be at max power for bdc reticles to work. But is it the same for dialing in ? Using a drop chart can you still dial in at any power?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/16/2012 at 09:12
ahiaring View Drop Down
Optics Apprentice
Optics Apprentice


Joined: January/21/2011
Location: Boise Idaho
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Sorry for the bad grammar... my phone's autofill doesn't always work well..
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/16/2012 at 09:29
SVT_Tactical View Drop Down
TEAM SWFA - Admin
TEAM SWFA - Admin
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Chief Sackscratch

Joined: December/17/2009
Location: NorthCackalacky
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Points: 29726
dialing in at any distance will get you the same impact no matter what power you are on.  The intersection of the crosshairs do no change like the distances between the BDC marks.  If you are on 3X and dial in to make your hit at a distance you'd still dial in the same if you were on 9x or whatever.  Changing power does not affect it.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/16/2012 at 09:31
3_tens View Drop Down
Optics Jedi Master
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Joined: January/08/2007
Location: Oklahoma
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Points: 7505
The reticle turret adjustments are consistent at all power settings. The subtensions change in a second focal plane scope. (The reticle stays the same size and the viewed object increases with an increase in magnification.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: March/16/2012 at 14:20
Dale Clifford View Drop Down
Optics Jedi Knight
Optics Jedi Knight


Joined: July/04/2004
Location: United States
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Points: 5087
for a sfp scope to show the same poi at all powers the erector must work exactly the same way each time the power dial is turned, a near impossibility. it is inherent in the sfp design.  this introduces a random error into the mix. The only company that I know that warranties no change of poi, because they have a stage for it in their quality control to check for it, is night force. They say they warranty against any change of impact, not that their isn't or could be a change of poi, a big difference.  (yes we have no bananas). All it means that it wasn't observed during the time the inspector used it. The better the scope the more likely of not seeing a change of poi
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