Norc M14 sight adjustment

[ipscgraz]

Finally got my 3rd M14 to the range to sight in; I was surprised to find that it shoots about 5 or 6 inches to the right at 50 yards. In one case I was printing on the target next to the one I was shooting LOL.

My front sight seems fine, and as vertical as you would expect on the Norc rifles (lots of front sight off-angle troubles posted in this section.) Index mark (found on the muzzle side of the front sight base) between front sight & sight base is aligned.

The rear sight is cranked as far "left" as it can go.
EDIT: the rear sight is cranked in the direction marked "left"
The rear sight assembly is moved as far to the right as it can go.

I figure my best course of action is to count clicks on the windage adjustment on the rear sight and centre it, then move the front sight over about a 1/64th of an inch and try again.

The reason I am posting this is to garner info from all the guys who have discovered the tricks & traps on these rifles...

...anybody got any better ideas???

 

[madtrapper143]

Sounds like your barrel is not indexed properly. If it were mine I would send it to the M14 doctor and have it re indexed. There should be no need to adjust that front sight. Of course if you chose to mount a scope that would solve your problem. I don't know if you will have enough movement in that front sight to correct 6" to the right at 50 yards. If you do the sight would so close to one of the ears that it would be hard to get a decent sight picture. How is the hole drilled in your aperature? Lot's of times it is off centre by quite a bit. That won't help either. ( I replaced mine with a NM sight apertature)

regards, Darryl

 

[M14Doctor]

For standard length m14 barrels .008 of and inch movement of the front sight will move POI 1 inch at 100
Same is true with shaving down the front sight blade.

Verify that sight base center mark is machined true to center... A GREAT many norc sight base have the rear sight center mark machinned WAY off center.
If it's ok, next check the aperture, is it drilled on center and more importantly does the hole align with the rear sight base center line
Once that's established and corrected with properly machined parts.
Then inspect the flash hider. Does the sight base center align with flash hider splineway
Does the sight base sit true or is it tilted.
If tilted, is it caused by an index issue or poor machinig of the flash hider?

Omce all these things are addressed, zeroing the rifle should be a snap

 

[ipscgraz]

Hi Tom; the rifle looks mechanically good; no obvious (well, to me) indexing or off-level problems.

On this topic, I found a link on this (for Garand sights) that I thought was kind of intresting,

ht tp://www.biggerhammer.net/manuals/garand/sighting.htm

How to set the sights up including the index line.