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I had to move the elevation on my Tula M44 up to 7 for 700 meters to hit the black at 100 yards (the carbine shot very, low as opposed to very high like yours). I replaced the front sight and hood with another Tula hooded post and now I only have to move the rear sight to 400 meters to hit the black at 100 yards.

Here is the Brownell's calculator as to how much alteration of your sights may be required:
https://www.brownells.com/.aspx/lid=13093/GunTechdetail/Sight_Correction_Calculator

The alternative to a higher front sight to lower the POI is to swap out, change, or modify the rear sight slide... Many of the refurbished Mosin-Nagant rifles show evidence of having been ground down a bit already. Certainly sights so modified look better than a piece of tubing cut down over the front post. There are also commercially available adjustable front sights. http://www.smith-sights.com/
Good luck!
 

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Either raise the front, or lower the rear. Wire sheath is a cheap and quick alternative to slide over the front to make it taller. You could file the rear sight base where the slider sits, or file the slider itself. You'd have to look closely to see where it contacts. Could be it may not take much if there is a high spot or something.

I had a tape measure and a 91/30 handy, so I went to the link dave provided for the alteration calculator. From the rear sight to the middle of the hole at the top of the front sight, is 24.5 inches on the measurement I did. I used the example of the rifle shooting 6 inches high at 100 yds. which seems to be pretty normal for refurbed 91/30s when the rear sight is at its lowest setting.

Amount of error = 6
Sight radius = 24.5
Distance = 3600 (3600 inches in 100 yds)

After calculation, a result of .041 alteration would be required of removing material from the rear sight, or elevation of the front sight to get you on par @ 100 yds. according to the correction calculator.
 

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Wire sheath? As in, the plastic casing of an electrical wire? How would you attach that?
I really do appreciate your help guys. I'm sure I'm not the only one with these concerns.
 

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Wire sheath? As in, the plastic casing of an electrical wire? How would you attach that?
I really do appreciate your help guys. I'm sure I'm not the only one with these concerns.
If you get the appropriate gauge wire (don't ask me what that is :)), it'll just stay in place by friction after it's forced on. The sight globe will prevent it being disturbed even in a gun case.
 

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Wire sheath? As in, the plastic casing of an electrical wire? How would you attach that?
I really do appreciate your help guys. I'm sure I'm not the only one with these concerns.
That's what i did. Just slip it on.
Somewhere maybe this forum? Someone said what size and for the life of me I can't remember.
You may be able to eyeball it if you have automotive rolls of wire where you go you can look at.
I want to say it was 12 , but ya know..... I just ain't sure
 

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If it is a blade or "barleycorn" front sight you'd have to get a taller replacement to bring the POI down.

A little adjustment goes a long way. The Soviet '55 Mosin Nagant manual explains every shift of 0.5mm in height will shift the POI at 100 meters by 8cm. On a Mosin-Nagant carbine, each shift in height by 1/2 a mm will change the POI 12cm.
 

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On one M91 rifle I took a piece of an AARP card, heated it and bent it into a V. Then I glued it on the front site after degreasing it with superglue. It is still on there, the black paint on it needs touched up once in a while.
 

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+1 on the JB Weld for barleycorn front sights. Done that. Works great.

For a Mosin front sight, I was able to find some pretty thin Aluminum tubing that slides pretty tightly over the front sight post (hobby store item), cut it to length, painted it flat black, and glued it in place using Rubber Cement.

For my M39, I got a bit more creative. I made a small brass shim that I inserted between the rear sight leaf and the sheet metal piece with the rear sight notch. It is virtually undetectable.
 
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