No 4 (T) tech data.

[Surpmil]

Could the issue of getting proper alignment between the scope mount fittings and the bore be helped; by using a laser bore sighter in the chamber and a laser pointer rigged into the scope mount.
That would allow you to sight the laser's on your workshop wall initially to get close. Then at a longer distance before final soldering of the pads.

That is exactly what I did for the IWS brackets I had made.