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No 1 Mk 3 front sight adjustment questions

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Topic: No 1 Mk 3 front sight adjustment questions
Posted By: HangmanLI
Subject: No 1 Mk 3 front sight adjustment questions
Date Posted: June 08 2018 at 4:16pm
I recently took apart and cleaned this rifle. It as given to me years ago by a friend.



It seemed to be way off center. I removed the nose cap and used a brass punch and small hammer to put it back in the middle.

But going forward how is the front sight adjusted? Is there a special tool to adjust the windage on the front sight?



Replies:
Posted By: Honkytonk
Date Posted: June 08 2018 at 6:07pm
The experts will know, but I'm sure there is a press that mounts on the ears of the front site and screws a adjusting "bolt" thru the holes in the ears to the dovetailed site. If like most dovetail sites, theyre wedged and only come out one way.


Posted By: A square 10
Date Posted: June 08 2018 at 7:53pm
it is not uncommon to find them that way - a few of mine are and they shoot just fine , so - you may be pushing it back when you sight in , but that will be the process one goes through to get it there 


Posted By: Bear43
Date Posted: June 08 2018 at 9:34pm
As HonkyTonk stated there actually is a tool for the job but a hammer and brass drift and judicial pressure do work fine too. I have seen former amourers state as much. Once you get the front sight set then peen it with a center punch. That keeps the blade from moving and is prescribed in the armourers manual.


Posted By: Hangman
Date Posted: June 09 2018 at 5:11am
You said peen it with a center punch once getting the windage adjustment correct. Is that a brass punch or steel?

I’m assuming that is done from the top down. Is that correct?



Posted By: Shamu
Date Posted: June 09 2018 at 5:38am
There's a "Cramp" tool for adjusting the front sight windage, you remove the nosecap, fit the correct one & adjust then re attach the nosecap.
http://vmaleather.com/Bromley-Armaments/Sight-Adjusting-Tools/" rel="nofollow - http://vmaleather.com/Bromley-Armaments/Sight-Adjusting-Tools/


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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)


Posted By: Honkytonk
Date Posted: June 09 2018 at 7:30am
I gotta think it would need to be a steel punch as in my experience peening, you want to put a little divet in both pieces to lock it in. Im thinking brass wouldn't touch steel due to hardness.


Posted By: Shamu
Date Posted: June 09 2018 at 9:06am
Yes a steel "p***k punch"
Its done from the front or rear, in the join between the sight blade &n the sight base.
https://www.milsurps.com/enfield_site/ti14_files/image005.jpg


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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)


Posted By: Hangman
Date Posted: June 09 2018 at 10:26am
At what distance will I know for certain that the front sight windage is correct?

100 yards? 200 yards?   Or further before pinning the sight?


Posted By: Honkytonk
Date Posted: June 09 2018 at 2:49pm
I would check the site post. If it's straight, I would put a caliper on the base, from the front end of the rifle. (Of course, unloaded!) Get reading, divide by half. Scribe dead centre on post and base with a scribe. Peen there. Windage adjustment on a target, stationary or moving, after that is, well, windage adjustment. The rifle is realatively zeroed left to right. It's now up to the nut behind the wheel!!


Posted By: Zed
Date Posted: June 10 2018 at 2:23pm
I would recommend shooting the rifle and adjusting the sight to centre the aim and point of impact.
You can do it at 50 yards if needed. There won't be any noticeable wind interference at that distance.
It is quite common for the front sight to be off centre when properly adjusted. So don't think something's wrong if it's not dead centre. I would not dot punch it in place until I'm happy with the adjustment. You do need to remove the nose cap on the cap's that have the solid ear's to adjust it. Therefore you need to calculate the amount it should move; measure it exactly so you don't have to keep removing the nose cap.

To calculate: Shoot the rifle with sufficent shot's to get a regular group.

Measure distance from point of aim to point of impact on the target.
Multiply by distance between front and rear sight.
Divide by distance between barrel and target.

Use the same scale of measurement for each.
 Example: Error on target 4". Sight radius 20". Distance to target 1800" (50 yards)

4x 20 = 80
80/1800 = 0,044"
Front sight needs moving 0,044" (44 thousandth's of an inch)

Check you actual data and work out what you need to do before making the adjustment.




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It's nice to be important, but it's more important to be nice!


Posted By: A square 10
Date Posted: June 10 2018 at 8:45pm
battle sights for the enfield were set at 300 yards , you can choose what you shoot as long as its already moving in the dovetail , set it to your shooting prefernce at this point , 



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