Sorry, my scope guru is in NZ for 6 weeks, if you can wait that long!

It looks ver similar to the dragunov scope adjustment.

Put the current range under the white pointer. Loosen the set screws in the dial. Use the dial to adjust the scope so that the elevation at the set range is dead on.

Re-tighten the screws. Stick a fork in it and call it done.

Hi I know nothing (doesn't stop me sticking my oar in) but that seems a lot of elevation I would worry about the erector springs I would pop a shim under the front mount.

This is a common problem in air rifles

Ok I think that you adjust to zero with the big needle in the middle, then undo the screws and move the dial around until 100 yards or metres is under the dial. This becomes your zero. To adjust for range (not forgettong to tighten the screws) you simply move the dial.
P.S. I think the 1000 metres is on the optimistic side dont you?
Or it could be different if both the pointer and the outer dial are free to move?

7.62 mm holes? You'll surely get better accuracy from the Mauser with 7.92 mm!

You need to move the dial on the drum at 100 to match that to the white pointer at the rear. That may raise your POI to within adjustable distance. Thats if the sight in the pic is as the sight when shot!

Don't touch the three screws! It will be just like unscrewing your belly button and having your arse fall off! If you do, you will shortly hear the sound of metallic objects rattling around inside.

This is a guess, but I believe you rotate the range ring until the range number is next to that arrowhead, then rotate the center lever to adjust the bullet strike. After that, you should be able to adjust for a different range by rotating the numbered ring to have the arrow point to the desired range.

I'm insanely jealous - what a thing of beauty!

Co-incidently, I was looking at an airsoft Mauser relica last Sunday and was sorely tempted...

Yes - sadly - I 'airsoft'. Because of teh laws in this country this is probably as close as I will ever get to firing one of thse......Pity me, don't hate me!

Fantastic blog!

I own one of these fine scopes and I can tell you EXACTLY how this thing works. First off, the "canoe" shaped dial in the middle is solely to focus the optic. To adjust the elevation, simply loosen the small thumbscrew (it is attached to the post with the arrow pointing to the range dial) and simply rotate the range dial until you are right on target. Don't worry about what the range dial is pointed to...we will take care of that now. The numbers are basically a bullet drop compensator for the military issue 7.92mm (192gr. I believe) and is set in meters. Now, with your rifle sighted at 100m, loosen the 3 screws on top of the turret (under the "canoe" focus lever...NOT on the scope tube itself). Next just rotate the range ring to have the arrow point to the 100 and then tighten down the screws. When the screws are loose, you should be able to rotate the ring without moving the crosshair up/down. With the screws now tight, it clamps the elevation adjustment to the range dial, so when you turn the dial to the next range, it will affect the elevation.