How Low Can You Go - modifying scope mounts

[Lol Moore]

A different method would be to cut the bottom mount vertically in half, fix one half to the scope and the other half is fixed to the rifle. Toss this idea around in your head see what you can come up with.

Not sure exactly what you mean...but interested If you mean split the bottom half of the traditional mount vertically to do away with the small section of flexing aluminium essentially to create a three piece mount I thought about that but decided with different sizes dovetails (none seem to be the same??) it may create problems with lining up the horizontal area where the top clamp has to face up with the bottom section - would look neat though, and would gain a further 2mm

Very impressive machining work on those scope mount bases and a good little problem.
The only way I can think of getting down to 1mm scope mount height is if you hang the mounts half off the ends of the rail (if the scope length allows) with the hanging off bit having more material depth/strength, might be easier to fasten a small plate to the end of the scope mount.
Other than that, the drastic measure might be machining 2 narrow slots across your scope rail say 3mm deep and 6mm wide, then machine a lug on the bottom of the mounts to suit and use several M3 bolts, counter sunk in the scope base to fasten it to the rail, just depends how much meat is on the rail/action.
As mentioned above Leupld make a 'low' series of scopes with a recessed objective lens to clear the barrel.
Have fun !

I drew up my Steyr Bullpup in just that way originally with the mount slung between the front and rear dovetail sections but couldn't find a scope of the right dimensions (length diameter combination) to fit there Don't want to machine the rifle just yet but had thought about a WeaverTail system by as you say cutting slots across an existing dovetail so the mounting screws can sit in these slots - maybe if I find a cheap action I will have a go

Leupold do make recessed objective scopes but only with large objectives, I want 32mm or lower objective to give the required depth of field.

Why not mount onto the barrel?

Now then, would love to do that but its difficult with a Steyr, makes sense at the back end, does away with misalignment and some of the action/mount/barrel movement problems seen.

May play havoc with the combined barrel tuner/moderator/sleeve/shroud thing I am playing with - secret squirrel that one - but not as secret as the barrel mounted reactive stabiliser I have...ohh sugar, now I have told you I will have to kill you all