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Bore sighting and adjusting windage

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/12/2006 at 21:43
gatorray View Drop Down
Optics GrassHopper
Optics GrassHopper


Joined: April/29/2006
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Bear with me folks - I can't get my scope lined up correctly even with a bore-sight lens (Guide Gear with .177 arbor).  It seems that the 1-piece 2-ring RWS mount with BSA scope on my RWS 34 .177 springer cannot be adjusted to line up the cross-bars on the bore-sight lens with my BSA scope.  The crossbars on the bore-sighter are about 4 inches to the right of the scope despite the gross and fine adjustments for windage moved to the max on the mount and the scope. Also, a minor issue is the weight of the Guide Gear lens - it falls over since the arbor isn't "jammed" too firmly into the rifle bore. I have to use tape to keep it upright while attempting to line up the scope and bore-sight reticles.  Setting the Elevation is not any problem. Any help will be greatly appreciated.
Ray
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/13/2006 at 05:39
fourinone View Drop Down
Optics Apprentice
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Joined: January/14/2006
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Do you have the RWS mount that can be both adjusted for windage & elevation?

The ones I have are adjustable in everyway. Check at the base of each ring for an allen set screw on both sides of the ring. If yours have them, you should be able to set it to get your windage in zero. You should return your scope turrets to the factory optical center before you start adjusting the mounts.

I recall these mounts being the most time consuming scope zeroing project I ever done. Care must be taken not to stress the scope tube while making the mount adjustments!!

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/13/2006 at 11:21
gatorray View Drop Down
Optics GrassHopper
Optics GrassHopper


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That's the heck of it. The RWS mount does have the  adjustable set screws at the base of the rings but I can't get it to zero. Even set to extreme, the scope center is still to the left of the boresighting by about 4 inches (from target center) If I turn the scope and tilt the reticles to the left I can zero it with the boresighter, but that looks dumb. Yes there are elevation and windage adjustments on the scope as well as the mount. Elevation is no problem. Guess I'm just a bit dense with this zero stuff.
Ray
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/14/2006 at 05:26
fourinone View Drop Down
Optics Apprentice
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Sounds like your gun barrel is less than straight or maybe the bore sight rig is crap.

Try zeroing in on a target at about 20 feet away.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/14/2006 at 09:57
gatorray View Drop Down
Optics GrassHopper
Optics GrassHopper


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Re: the gun barrel: The basic iron sights are pretty accurate but I need a scope to get the little critters at 40-60 ft. The arbor on the boresighter is relatively small and there isn't enought friction to keep the relatively heavy lens upright (it rotates too easily on the arbor axis).  I've tried expanding the retaining copper spring a little without success.  If I "duct tape" the lens housing to the rifle front sight it stays put, but that seems  ridiculous. I've seen another boresighters advertised with a magnetic attachment to the end of the rifle/bore. Do these work any better? Methinks the bore sight device is simply a design flaw and it's really made for heavy caliber rifles, etc.  The kit did come with a 20 g arbor with a "real" twisting expandable arbor. Now that's a solid mamma compared to the other arbors using the copper wire for the friction.  Anyone else with a recommendation for a better bore-sighter? 
Ray
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