First off let me appologise for this rambling post. My friend, who is a doctor, psychoanalyzed me while we drank beer one night. Apparently my brain when problem solving, addresses several inter-relating dimensions at once. My thought pattern at any instant tends to be at every point in the known universe simultaneously. . . . 42. .
I was going to edit this down a bit, but I thought that I might just share my thoughts (eek! scary!).
This morning's conundrum for me was the question about a leaf sight on a MLM that was calibrated to 1600 yards. I have not seen one before.
So I was fascinated by some pics sent to me by John Deere (thanks Kevin). Enfield 'minutia' is something that seems to satisfy my OCD.



I cannot make a definite assertion as to what is going on here with the rear sight, but I have a few clues for the 'forensic restorer'.
The sight leaf.
It is numbered to the rifle, suggesting that is is an original to that rifle. For sure it could be marked by anybody who had stamps, but the stamping is neat and looks factory. I am satisfied that it is original. It has the dimple at the bottom of the ladder at the back, so it is Mk.I MLM in form. Not sure about the fit of the ladder to the ends and the sides of the sight ramps, the clearance seems a wee bit excessive.
The graduations on it are interesting. 1600 yards. This is new to me on a Lee Metford. The leaf is certainly not military, in that although numbered to the rifle, there is no Govt acceptance marking (WD or broad arrow or both) marked on the lower front face. The leaf cap is of MLM form.
The slider I am certain is not MLM. I say that because of a couple of things. Firstly, the width of the slider top to bottom, it is wide. Way wider than those installed on a MLM/MLE, however, it is about the same proportions as that of the slider found on a Mk.I Martini Henry.

Martini Henry Mk.I
Another clue is the back of the slider has ears that are finished square to the sight as per Mk.I Martini Henry. MLM and MLE sliders had the ears at the back tapered to a triangle form. Maybe my imagination, but I think I might be able to see a factory inspection mark on the back on the right hand ear. Closer examination needed.
The way that the slider sits right now, it will not bear on the sight ramps, the ears are too short and don't stick out far enough to reach the ramps, so adjusting the slider up and down the ladder will have no effect on the range setting??
I can see that the V notch that is in it now is somebody's creation, not factory. The bottom of the slider has been shaved a bit witnessed by the relative positions of the ends of the knurled radii, they are no longer symmetrical. Very subtle, but I can see it.
Looking at it again, another possibility is that it is a Mk.II MH slider much modified, however, the knurling is different.
My gut feeling is that the slider was switched out and modified to try to correct sighting. The V notch looks to be offset a wee bit to the left. In later years (Boer war) it was discovered that the factory sighting was incorrect and that most rifles shot to the right of the point of aim. So a retro sight leaf was introduced in 1902 to correct for bullet drift.
So this is a known problem of the MLM and MLE rifles. Home made adjustments are quite commonly found on post service rifles that were done by a civilian owner.
Here is a tip for you. With ALL Enfield rear sighting, the V notch cut in a slider or leaf cap has sides set at at 45 degrees. IE, the V notch has a root angle of 90 degrees. A quick way to tell if a sight leaf or slider is untouched or if modified by Bubba, is to eyeball the V notch. Nine times out of ten when farmer Brown or Bubba (maybe Bubba Brown?) 'improves' the factory sighting, he grabs a triangular file from the workshop to deepen the triangular notch. Such a file has three corners with a 60 degree angle and is best left for sharpening saw blades..
So if you have a leaf sight with a notch that aint 90 degrees, it has been modified. This theory is blown if Bubba uses a square file, but often the size is increased noticeably.
The sight bed.
It does have a British Govt acceptance marking of WD broad arrow. Undisputedly a military part. So what is it doing on a commercial arm?
Some collectors tell me that military marked parts were commonly used on commercial arms at the factory.
I don't buy this. The broad arrow is a property ownership stamp of the British Government. I would be pissed if I ordered a commercial arm, which were not cheap by any stretch of the imagination, paid good bucks and then found Brit Govt parts on it!!!
Every commercial arm that I have handled and I determined as being very much untouched have zero govt marked parts. A rifle that has miles on it and a shaded or unknown past, sometimes have a mix match of military marked parts. And why not? I repair commercial arms and will fit any part that is correct, unmarked or not. Only on high end restorations of a commercial arm that is something rare or valuable will I go extra lengths and find an unmarked part to install.
The sight base dos appear to be generally MLM style. I would have liked to see a picture of the slider ramps. MLM ramps run uphill straight where as MH ramps have stages or bumps. I think that in the pic from above I can see the edges of the bumps. It is from an older rifle of some sort.
The graduations are on the left hand side of the base (MH are on the right) and run from 300 yards (which is significant) to unknown yards, I cant see more in the picture.
MH bases run 100 to 400 with a leaf from 500 to 1200, MLM bases run 200 to 500 with a leaf 600 to 1800, CLLE run 200 to 600 yards with a leaf that runs 700 to 1900. So excuse me while I extrapolate, the subject leaf showing 500 to 1600 I would expect to be be mounted on a base that runs up to 400. Since this base pictured starts at 300, it would have only two sight settings, 300 and 400? Which may well be, as I dont see any additional range marks. Hmmm, things that make me go hmmm.
Every military MLM, MLE LEC or LMC sight bed that I have seen, the base graduations start at 200 yards. So now I am searching for info on which military rifle had a sight base graduations that started at 300 yards. I probably won't be able to sleep tonight..
More clues. At the factory, the rear screw was installed when the sight base was soldered to the barrel. Unless enough heat is applied to the base to melt the solder, the screw is difficult to take out. Many spare sight bases floating around have rear screws with a chewed slot. Or even worse, Bubba took the screws out and thinks that the sight base is just stuck and should come off. So he gets a hammer and screwdriver to give the base a bump. It don't budge so he hits it harder.
The first thing I do when selecting a sight base is to look for bruising or tool marks where force was used to remove it from the barrel.
The clues are there to suggest that the sight leaf and base are NOT undisturbed since the factory. The pivot pin that secures the leaf originally had domed ends. There are special gunsmith punches that have a little concave in the end for driving out such pins. Most workbenches have flat faced punches which will put a flat on the end of the pin. I see that the pins has been removed at some time. The rear screw is not mint anymore, I would suggest that it has been removed at some time.'It dont mean nothin', this is an old rifle, it might have been taken apart 100 times.
So after all this rambling, my conclusions...
The sight leaf graduated to 1600 yards is original to the rifle, but it is not military pattern.
I am thinking that the sight base has been switched out for an unknown military unit and the original commercial sight leaf reinstalled with a modified slider taken from a Martini Henry. This all was done playing with the sighting to get it onto target. All service rifles shoot high to point of aim, and most MLM and MLE shoot off to the right.
The front barrel band is also govt marked, so it too has been switched out. No big deal, but points to the fact that this rifle has been repaired and maintained during its life and that commonly available take off military parts have been used.
And the reveal....
I am not knocking the rifle. I would love to see another thread with more pics. But if this came across my bench, I would no doubt make changes. Yes, this might be destroying part of the rifle's history, I get that. But changes not just to be authentic as per factory build, but to restore functionality of the sight.
Just me, but I would remove the current sight bed and install a regular MLM/MLE unit. I probably could find a commercial one in the bins with no inspection or govt markings. The 1600 yard leaf sight would be reinstalled with a regular MLM/MLE slider. I could then at least adjust for elevation.
If the rifle shot off to the right, I would try the install the leaf cap and slider taken from one of the offset retrofit leafs to help bring it back onto point of aim.