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Enfield No.4 Mk.1 Sight Adjustment How To

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jmiles1960 View Drop Down
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    Posted: January 02 2022 at 12:16pm
I am a new Enfield owner: No.4 Mk.1 Long Branch 1941. My rifle shoots 2 - 3 inches to the left at 50 yards from a bench rest. I am looking for instructions on how to adjust the windage. I understand it is done from the front sight.  Thanks for the help!
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britrifles View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote britrifles Quote  Post ReplyReply Direct Link To This Post Posted: January 02 2022 at 1:53pm
Does the front sight base have a odd looking “inverse” flat head screw like the picture below?  You can make a tool that fits the screw or buy a schrader valve tool used to remove the valve core from the stem.

These screws were made this way to keep soldiers from tampering with the front sight alignment. 

The other type of front sight base does not have a screw, the sight blade is a press fit.  It can be drifted with a brass punch. 


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jmiles1960 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jmiles1960 Quote  Post ReplyReply Direct Link To This Post Posted: January 02 2022 at 2:11pm
Yes, mine has the inverse screw shown in your picture. With the proper tool, should I loosen this screw before drifting the site? Thanks for the response and help.
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Shamu View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: January 02 2022 at 3:06pm
The very first thing to do is scribe a "witness mark", basically a line scratched into both the blade & the blade.
That was if something goes wrong you can get back to where you started from easily.
NOW you loosen the screw.
Windage may now be addressed. Windage adjustments are made by moving the front sight left or right as required to move the MPI to dead center of the vertical plane of the target. Moving the front sight .050 of an inch (one blade's width) will move the MPI 6 inches at 100 yards or 1-1/2 inches at 25 yards. To correct left of center, the front sight must be moved left and right of center is moved right. (Moved INTO the error)

Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Goosic Quote  Post ReplyReply Direct Link To This Post Posted: January 02 2022 at 3:31pm
Originally posted by jmiles1960 jmiles1960 wrote:

Yes, mine has the inverse screw shown in your picture. With the proper tool, should I loosen this screw before drifting the site? Thanks for the response and help.
Once that screw is loose, there is no drifting involved. You simply move it with finger pressure...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shamu Quote  Post ReplyReply Direct Link To This Post Posted: January 02 2022 at 7:06pm
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Don't shoot till you see the whites of their thighs. (Unofficial motto of the Royal Air Force)
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jmiles1960 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jmiles1960 Quote  Post ReplyReply Direct Link To This Post Posted: January 02 2022 at 7:18pm
My thanks to everyone on this thread for their feedback and advice.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 303carbine Quote  Post ReplyReply Direct Link To This Post Posted: January 02 2022 at 10:58pm
Originally posted by jmiles1960 jmiles1960 wrote:

I am a new Enfield owner: No.4 Mk.1 Long Branch 1941. My rifle shoots 2 - 3 inches to the left at 50 yards from a bench rest. I am looking for instructions on how to adjust the windage. I understand it is done from the front sight.  Thanks for the help!

If it shoots to the left, the front sight needs to go to the left.
I made a front sight adjustment tool by dremeling a notch in an old screw driver.
It works perfectly.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote terrylee Quote  Post ReplyReply Direct Link To This Post Posted: January 03 2022 at 1:57am
 My homemade No.4 sight adjuster. It works very well! 



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Post Options Post Options   Thanks (0) Thanks(0)   Quote terrylee Quote  Post ReplyReply Direct Link To This Post Posted: January 03 2022 at 2:00am
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