Ross M-10 rear sight question/problem

[rayg]

The Ross M-10 rifle I just recently aquired has two stamps on it that have a crown over crossed flags and DPC. between the poles. Not sure what that stamp is, maybe indicating "Drill Purpose condemmed" which could indicate obsolete. I'm not sure. Most DP stamped rifles I've seen had just a large DP stamped on them.
Any way I checked it out and everything appeared to be ok. It has an excellent bore. I also made sure the bolt had been put together right. Took it to the range and put 20 rds through it without a problem. The cases looked ok so the chamber has not been enlarged. Shot good groups but 6" to the left at 50 yrds.
The problem is the windage sight is set too far to the right. I'm assuming the little serarated gears in the front of the leaf need to be rotated/turned to move the windage zero over but the gears will not turn or move more the a quarter turn. Am I doing something wrong? Ray

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[rayg]

I posted this question on some Ross forums but didn't want you guys to miss it as I have lots of faith in your knowledge.


The Ross M-10 rifle I just recently aquired has two stamps on it that have a crown over crossed flags and DPC. between the poles. Not sure what that stamp is, maybe indicating "Drill Purpose condemmed" which could indicate obsolete. I'm not sure. Most DP stamped rifles I've seen had just a large DP stamped on them.
Any way I checked it out and everything appeared to be ok. It has an excellent bore. I also made sure the bolt had been put together right. Took it to the range and put 20 rds through it without a problem. The cases looked ok so the chamber has not been enlarged. Shot good groups but 6" to the left at 50 yrds.
The problem is the windage sight is set too far to the right. I'm assuming the little serarated gears in the front of the leaf need to be rotated/turned to move the windage zero over but the gears will not turn or move more the a quarter turn. Am I doing something wrong? Ray

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[muffett.2008]

The sight appears twisted, your 1st pic shows a gap on the left side under the slider, the Ross sights in my collection sit flat and move freely.
Look at correcting whatever causes that. Yes the thumb wheel should rotate freely, but the worm is obviously binding on the side mentioned, nothing a bit of TLC can't remedy.

[rayg]

Well I got the drum free but find they only lock the elevation screw from moving. Apparently has nothing with the windage movement. How does that windage get moved? Could it be that you just tap it over? Ray

[RCEMERalf]

Dominion of Canada Proof?

[rayg]

Thanks that makes sense, Ray

[muffett.2008]

You need to check the face plate worm contact points and correct the misalignment.

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[rayg]

I do see mine is cocked there, I will try to fix that, Ray

[oldpaul]

Ray, My rifle was one of those that found its way to India and was not well maintained or in a humid environment, or both. I was able to defeat the rust with a week of soaking in Kroil. However the very fine threads on the drum were damaged by the rust to the extent that the windage plate would move without my intent, (on recoil or a bump etc.) Numrich does not offer the small parts separately, just the complete sight in 'good' to 'very good' condition. The one I received was excellent. I'm not sure how allignment with the elevation screw has any effect on the windage adjustment as the windage assembly is integral to itself (picture) and its operation (or lack thereof) is independent of the rest of the sights operation. TomAttachment 34497

[rayg]

Success gentlemen! Got the drum to move the plate. The drum will not finger turn but needs to be helped but was able to move it right and left. Thanks everyone for all the help and suggestions, Ray