Adjusting the 10/22 Peep Sight

[FiremanBob]

At recent shoots, I've seen many owners of the Design Contest Winner, the Collector's Edition II, and the M1 Carbine model who don't know how to adjust their rear sights. The 10/22 owner's manual is no help - it only covers adjustment of the blade sight on the standard carbines and rifles. Ruger should add a page to the manual for these models.

The 10/22s with the peep sight use the Mini-14 rear sight. It is adjustable for both windage and elevation. Here's how:

Windage: The rear aperture is held in place by two set screws. Using a 5/64 hex key, loosen the screw on the side where want the sight to move. Then, tighten the screw on the other side until the aperture is held tight again. There are no clicks and partial turns are ok. One full turn of the screw equals about 5 minutes of angle (5 MOA) or 5 inches at 100 yards. Remember, you want to move the rear sight in the same direction that you want your point of impact to move.

Elevation: Loosen one of the windage screws - only one. This allows the rear aperture post to turn freely. Then turn the rear aperture post by half-turns. To raise the point of impact, turn it counter-clockwise. To lower the point of impact, turn it clockwise. One full turn of the post equals about 1.25 MOA. Then tighten the windage screw that you loosened.

It would sure help if Ruger put this information in the box. But now you have it.

[Mutant Texan]

I think my two Ruger Gun Scout Rifles have the same type of ghost ring as what this Collectors edition 10/22 has.  Despite the confusion on how to adjust it, this ghost ring setup is far superior to the junk iron sights on most Ruger 10/22s.  Now if they could only adopt a better ghost ring that was adjustable without the use of tools like the M1 Garand or the AR-15 with standard iron sights.  I understand that it is a bit harder to make an adjustable front sight post without requiring a tool.

Go to page 31 of this link for pictures on how to adjust the ghost ring of a Ruger GSR which I think is the same sight you are referring to.

This collectors edition 10/22 rifle does have my interest.  I am a big fan of the 10/22 once it's flaws have been corrected by attaching Techsights to it.  I would love to compare them side by side and shoot them both.  I have to admit that the Ruger GSR sights are pretty good once they are zeroed.  The sight radius is long and these iron sights are standard on this bolt action rifle.  I think that the Techsights still have the edge because it is much easier to adjust the elevation for longer distances than the GSR sights.

[goodoldfriend]

Thank you sir!. I got one of these rifles and had not taken the time to call Ruger yet about the adjustment issue. I didn't want to start messing with it until I got a definitive word.

In the meantime I have removed the rear sight as I set this rifle up with a scope for my daughter to use. I used medium height Viper rings. The eyepiece of the scope was hitting the rear sight so it had to come off.

[Luminous Rabbit]

I think my two Ruger Gun Scout Rifles have the same type of ghost ring as what this Collectors edition 10/22 has.

I'm 99% sure they're the same.  I found mine did better adjusting elevation first and windage second.  It's no Garand/M14 sight, but then what is?

[maxwell]

One full turn of the screw equals about 5 minutes of angle (5 MOA) or 5 inches at 100 yards.

One full turn of the post equals about 1.25 MOA

THANK YOU! I knew one turn was a pretty significant windage change, but never worked out how much. This will go in my notes for the next shoot.

FWIW, I bought my son a 10/22 collector's 2nd edition, since it seemed perfect for Appleseed (sling studs, rail, I could adjust length of pull). The rear sight loosened up on him during the first day with it, though, and we noticed it too late. I've since replaced it with the Tech Sights Mini200, which is a drop-in replacement that is click-adjustable and allows you to use the stock front sight and receiver rail.

http://www.rimfirecentral.com/forums/showpost.php?p=5552742&postcount=8

In my opinion, the Ruger ghost ring is a lousy design, and Ruger should feel bad about shipping it on an otherwise nice rifle. It's not click-adjustable, and you can't Loctite it in place without losing all adjustment capability. I won't tell shooters that in so many words during an event, but I have pointed them to the Tech Sights version.

[drifter52]

Elevation: Loosen one of the windage screws - only one. This allows the rear aperture post to turn freely. Then turn the rear aperture post by half-turns. To raise the point of impact, turn it counter-clockwise. To lower the point of impact, turn it clockwise. One full turn of the post equals about 1.25 MOA. Then tighten the windage screw that you loosened.

Thanks for this FiremanBob - this is going in my binder of rifle-specific sight adjustment info.

Just for clarification purposes, from the Ruger Mini-14 owner's manual, the value of elevation adjustment for each one-half (180 degrees) turn of the rear aperture post is about 1.25 MOA.  One full turn (360 degrees) is about 2.5 MOA.  This is the same in the Ruger Scout Rifle owner's manual.