Which rear sight for No5 clone?

[TCS-5]

Peter,
So are you saying there's no difference in the Mk1 and No5s sight except the No5 only goes up to 800 yds? But from 0-800 they are exactly the same? That is the marks are in exactly the same place up to 800 yds?

If so, how are they compensating for a shorter barrel on the No5 carbine? ....

Also seen an original No5 carbine with a No7 sight on it. What's the difference between the No5 and No7 sight?

---------- Post added at 12:32 PM ---------- Previous post was at 12:27 PM ----------

TCS-5, Thats a nice job you did, just shows all is not lost when seeing a cheap (I,m guessing it was cheap) sporter for sale.

Yes, $75 and from a private party in my state so there was no paper work needed... a double good deal.

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[Parashooter]

Resurrected from no.5 micro sight on a no.4? topic in 2013 -

At least on these two examples (original sights), there appears to be a difference in screw diameter and pitch. Given the slightly coarser thread on the 800-yard sight, the "click value" would be some 10% greater than the 1300-yard sight if both were mounted on rifles with the same sight radius - except for the fact that the 1300-yard elevation screw is double-threaded, giving it an effective pitch approximately double that of the single-thread 800-yard screw.

On measuring the two sights shown, each click of the No.4's sight moves the slide .008" - vs. .0043" on the No.5's sight. Consequently, the 1300-yard sight gives very close to 1.0 MOA per click with the No.4 rifle's 28" sight radius while the 800-yard sight has a click value of ~0.66 MOA with the No.5's 23" sight radius and would yield ~0.55 MOA on a No.4 rifle.

[TCS-5]

Q1: What do you mean the Mk1 sight and the No5 sight? There is a No5 Mk1 sight and a No5 Mk2 sight. You've lost me

This is what I mean... See the Mk1 micrometer sight verses the No5 sight?

Q2: 'But from 800 they are exactly the same.........' You've lost me again. From 800 there ain't no graduations on the No5 rifle sight!!!!!

You should read what I typed again. "But from 0-800 they are exactly the same?" Zero-800. It was a question not a statement.
You think you're frustrated? I haven't miss quoted you yet.

Q3: How are 'they'? 'They' don't! The specially graduated No5 sight is graduated for the trajectory and m/v of the shorter rifle characteristics and barrel harmonics

This is exactly my point. Thanks to Parashooter for the side by side comparison to confirm that from Zero to 800 these sights are not the same.

Your rifle is a hybrid ... So cutting to the quick, I personally suggest that you just fit a bog standard cheapo Mk1 No4 backsight ...

Peter,
Because you didn't understand "0-800" and miss quoted me, responding in a way that makes one feel like an *** or arse, I see no reason to try to answer any more of your questions.
And I know what my rifle is since I rebuilt it and I will put on the sight I see fit.

Thank you for your expert and friendly advice.

Now I'm beginning to understand why there are so many Lee Enfield discussion groups...

[Seaspriter]

Peter,
difference in the Mk1 and No5s sight except the No5 only goes up to 800 yds? But from 0-800 they are exactly the same? That is the marks are in exactly the same place up to 800 yds?

I measured the actual difference between the 200-800 yd gradations on a No. 4 & No.5 Mk1 sight. The difference is significant (it's hard to see on the photo on post # 18. Note: the difference between the two models really has nothing to do with the # of clicks on the screw.):
-- No.4 = .275"
-- No.5. = .250".
-- The distance from the hinge pin to the 200 yd gradation is the same on both models, indicating that from 0-200 yds both guns aim the same.

This means the two sights are significantly different beyond 200 yds. The designers were compensating for the different barrel lengths/different muzzle velocities, etc.

In other words, use a No. 5 sight on the carbine, not a No. 4 sight.

[TCS-5]

I measured the actual difference between the 200-800 yd gradations on a No. 4 & No.5 Mk1 sight. The difference is significant.....
In other words, use a No. 5 sight on the carbine, not a No. 4 sight.

Finally, someone gets it! Thank you Seaspriter!

A No5 sight is on it's way.