Mounting a 4-12 scope on my rifle and looking through the barrel for boresight. Method is rough but has put me on the paper at 25 yards in the past with other scopes. When the bull is clearly seen through the bore and the rifle mounted in the Caldwell Lead Sled, the crosshairs are showing high but only by an inch or two. But they are also way to the right, approximately 6 inches or so. Adjusted lateral to the left but ran out of clicks when the crosshairs are still showing an inch or two to the right. Checked the rings and mounts and they seem true and tight. Will test fire to check the actual POI but, assuming it is on target is there any problem with using this rig with most or all of the lateral adjustment against the stop? Just a regular Duplex Reticle so won't be using turrets once set. Is shimming the rings a solution?
Sighting in scope but running out of lateral adjustment
- Thread starter Jetjock
- Start date
- Location
- In the shadows of the Rockies
Depends. Some scopes I own won't hold zero very well with the adjustments skewed toward the limits. Better to have the adjustments at or near mid-point for best optical quality.
The cause of running out of windage adjustment could be the scope mount holes in the receiver weren't drilled in line with the bore, the rings aren't concentric, or the barrel is canted.
The cause of running out of windage adjustment could be the scope mount holes in the receiver weren't drilled in line with the bore, the rings aren't concentric, or the barrel is canted.
I think it is better not to use all your lateral windage adjust up trying to get on the target but it may work for you.
Burris Signature Zee rings come with inserts and you can get additional ones of different MOA that you could possible use to correct the issue.
I would shoot the rifle at 25m and see where you are first before trying anything else.
Burris Signature Zee rings come with inserts and you can get additional ones of different MOA that you could possible use to correct the issue.
I would shoot the rifle at 25m and see where you are first before trying anything else.
- Location
- West Quebec
The Burris rings are great that's all I use on my centre fire rifles now..
- Location
- Northeastern Ontario
As others have noted, Burris Signature Zee rings can help you. Alternatively, as Slamfire alludes, you could try Leupold STD Mounting System has windage adjusting screws.
See h t t p s:/ /www.leupold.com/hunting-shooting/mounting-systems/std-mounting-systems/
See h t t p s:/ /www.leupold.com/hunting-shooting/mounting-systems/std-mounting-systems/
Having mounted scopes on Ruger #1's before, I recommend finding a windage adjustable base that fits on the rail on it. Call Korth tomorrow if you want Leupold rings or call Ruger and ask. I have found almost all Ruger #1's have a rail slightly offset enough that windage bases are a must.
- Location
- In the shadows of the Rockies
No issues with my Ruger No.1 rifles.
There are windage-adjustable rings for the Ruger No.1 -
https://www.natchezss.com/millet-angle-loc-windage-adjustable-ruger-scope-rings-77-22-1-3-96-44-ranch-redhawk.html
There are windage-adjustable rings for the Ruger No.1 -
https://www.natchezss.com/millet-angle-loc-windage-adjustable-ruger-scope-rings-77-22-1-3-96-44-ranch-redhawk.html
Bigfoot 870
CGN frequent flyer
- Location
- Nova Scotia
I would be very surprised if the D&T is off, on your Ruger No.1.
My scope "ran out" of windage adjustment, leaving my POI 4" to the right, at 50 yards. My buddy thought my scope was kaput, while I thought that the drill and tap, on my "new to me" H&R Handi Rifle, was off. I now suspect that the adjustment stuck, in cold weather (I.e. gummed up inside). I spoke to Phil, at Trace Scope Repair, in Calgary. He repairs the older, Made In USA Redfield, Weaver, etc scopes. He estimated $100 to $120 to take my scope apart, clean, and recharge it. I decided to try adjustable rings, first.
Phil told me that the older scopes had less adjustment than today's scopes, of similar quality. My old Redfield actually had more clicks than a Vortex Diamondback. Both had over 300 1/4" clicks, total, in both windage an elevation.
Anyways, here's what I did:
1) Place small mirror, flat on a desk or table, in a well lit room. (I had done the "count number of total clicks, then come back halfway" method, prior to knowing about the mirror centering method. My scope had over 300 1/4" clicks, total.)
2) Place scope on mirror, with objective end flush on mirror.
3) Look through scope, as you would, if sighting at a target. You will see two crosshairs.
4) Adjust both turrets until you see only one crosshair. (Mine took approx 20 clicks, to align the windage, so both methods are similar, for centering.)
5) Remount scope using Miller Angle-Loc rings. Adjust windage screws so that they are even on both sides. Do not loctite, at this point.
6) At 20 to 30 yards, using a laser bore sighter (I bought a cartridge style one on amazon.ca), with you rifle in your leadsled, adjust rings / scope so that your crosshairs are centered on the red dot (I did this inside, an unlit industrial garage, so that the red dot was easy to view). Be sure to leave yourself lots of scope adjustment, for fine tuning at the range. Loctite your adjustment screws, and reinstall, one at a time. Millet recommends ring lapping. I didn't have to adjust my rings, from center, so I didn't lap.
I haven't yet gotten to the range, to do the fine tuning.
Good luck
https://www.facebook.com/tracescoperepair/
https://www.amazon.ca/gp/product/B00FC7XOJ0/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Lever Arms, Frontier Firearms and Bulls Eye London are Millet dealers.
My scope "ran out" of windage adjustment, leaving my POI 4" to the right, at 50 yards. My buddy thought my scope was kaput, while I thought that the drill and tap, on my "new to me" H&R Handi Rifle, was off. I now suspect that the adjustment stuck, in cold weather (I.e. gummed up inside). I spoke to Phil, at Trace Scope Repair, in Calgary. He repairs the older, Made In USA Redfield, Weaver, etc scopes. He estimated $100 to $120 to take my scope apart, clean, and recharge it. I decided to try adjustable rings, first.
Phil told me that the older scopes had less adjustment than today's scopes, of similar quality. My old Redfield actually had more clicks than a Vortex Diamondback. Both had over 300 1/4" clicks, total, in both windage an elevation.
Anyways, here's what I did:
1) Place small mirror, flat on a desk or table, in a well lit room. (I had done the "count number of total clicks, then come back halfway" method, prior to knowing about the mirror centering method. My scope had over 300 1/4" clicks, total.)
2) Place scope on mirror, with objective end flush on mirror.
3) Look through scope, as you would, if sighting at a target. You will see two crosshairs.
4) Adjust both turrets until you see only one crosshair. (Mine took approx 20 clicks, to align the windage, so both methods are similar, for centering.)
5) Remount scope using Miller Angle-Loc rings. Adjust windage screws so that they are even on both sides. Do not loctite, at this point.
6) At 20 to 30 yards, using a laser bore sighter (I bought a cartridge style one on amazon.ca), with you rifle in your leadsled, adjust rings / scope so that your crosshairs are centered on the red dot (I did this inside, an unlit industrial garage, so that the red dot was easy to view). Be sure to leave yourself lots of scope adjustment, for fine tuning at the range. Loctite your adjustment screws, and reinstall, one at a time. Millet recommends ring lapping. I didn't have to adjust my rings, from center, so I didn't lap.
I haven't yet gotten to the range, to do the fine tuning.
Good luck
https://www.facebook.com/tracescoperepair/
https://www.amazon.ca/gp/product/B00FC7XOJ0/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Lever Arms, Frontier Firearms and Bulls Eye London are Millet dealers.
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Thanks for the suggestion and directions guys. I ruled out the scope as the problem as I mounted a different scope and same results. I have a call into Korth Group and will see if a set of Leupold adjustable rings will solve the problem.
Took the rifle into Sportsmen Den in Red Deer and Roy took the scope off and gently tapped the base mounts with a plastic hammer until he was satisfied that they were now in alignment. Mounted the scope and boresighted until he was satisfied that the scope was mounted true, both vertically and laterally. After about an hour of adjusting, (including replacing a non-standard screw in the rings), he said take it out and shoot it. I inquired about the price for his work and he said "well I did have to replace the screw so let's call it $10". Took the rifle out to the range and it shot absolutely straight but about 6 inches high at 100 yds. Adjusted down to where it was grouping 2" high at 100 yds. Tried it at 200 yds and it shot a 3 shot group on target with about a 3" group. Very pleased. As a small owner shop Sportsmen Den can't compete with the huge wholesale stores, but their prices are fair and their service and attention to customers who shoot and fish reminds me of when you had a relationship with the owners and not speaking across the counter to a minimum wage paid clerk who started yesterday. Next time I purchase anything hunting or fishing related, I will drive 100km from Calgary to buy at Sportsmen Den in Red Deer.
No idea what caused the problem. I watched and Roy took off the bases, remounted, and then tapped on the forward base with a plastic hammer, inserted a steel tube the same size as the rings, tapped some more, than installed the scope and offered me a look down the scope into the bore sighter. Rotating the scope showed the crosshairs spinning around the same square of the boresighter. Have no idea why the bases need alignment but he was no fan of the Ruger mounts and bases. Alls well that ends well!
