Offset scope for vision problems
- Thread starter Jennb
- Start date
Jennb,
I built this mount for my father who is 78. I had him get his optometrist to measure from pupil to pupil (62mm) which gave me the amount of offset to move the scope over. I used 2 Weaver bases to mount the scope to the plate. His zero from 50 to 100 requires both vertical and horizonal adjustment but is repeatable.
I built this mount for my father who is 78. I had him get his optometrist to measure from pupil to pupil (62mm) which gave me the amount of offset to move the scope over. I used 2 Weaver bases to mount the scope to the plate. His zero from 50 to 100 requires both vertical and horizonal adjustment but is repeatable.
Offset mounts are a great idea unless your using a dual port action. I switched and now shoot left handed. I can't shoot nearly as fast as I used to but accuracy has not suffered. The biggest issue is the dual port now spills the empties onto the ground. I purchased one new bolt with defeats the purpose of a dual port but it's a small sacrifice. I did purchase my first left hand action and plan on using it this year. If I like it there may be a few dual ports on the market.
The vision in my right eye has faded. A fellow shooter at my club helped me by making an plate out of 1/4" aluminum plate to offset the scope on my Anschutz 1413.
It works quite well. Normal Smallbore competition is at 50 yards, 50 meters and 100 yards.
With the scope turrets zero'd at 50 yards, my windage compensation is 0.5 moa right (+/-) and at 100 yards 1.5 moa (+/-) elevation is unchanged from original mounts. Still shooting master level smallbore prone scores. (99.5% & above)
I have since, changed all of my rifles to offset mounts. Those were done with a combination of 45 degree Pic rail mounts and pic rail risers to gain proper vertical and horizontal positioning. Not pretty to look at but they all work well. Center fire rifles demand loc tite on all screws! Offset scope adjustments for windage are as noted above. For distances beyond 100 yds the offsets are smaller. at 200 yds rt 0.75moa (+-)
Theoretically at 1000 yds the offset needed to compensate for a scope mounted 1.75" left is about 0.25 moa.
Far more than wind drift, etc.
It works quite well. Normal Smallbore competition is at 50 yards, 50 meters and 100 yards.
With the scope turrets zero'd at 50 yards, my windage compensation is 0.5 moa right (+/-) and at 100 yards 1.5 moa (+/-) elevation is unchanged from original mounts. Still shooting master level smallbore prone scores. (99.5% & above)
I have since, changed all of my rifles to offset mounts. Those were done with a combination of 45 degree Pic rail mounts and pic rail risers to gain proper vertical and horizontal positioning. Not pretty to look at but they all work well. Center fire rifles demand loc tite on all screws! Offset scope adjustments for windage are as noted above. For distances beyond 100 yds the offsets are smaller. at 200 yds rt 0.75moa (+-)
Theoretically at 1000 yds the offset needed to compensate for a scope mounted 1.75" left is about 0.25 moa.
Far more than wind drift, etc.
Attachments
https://www.hartcustomrifles.com R.W. Hart and Sons Rifles in Nescopeck, PA stocked them at one time.
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