I have access to the wall guns at Rock Island Arsenal. I can supply measurements if someone can tell me which dimensions are critical.
They all are
If possible...
Length of trigger pull.
Depth and width of buttplate.
Breech, waist (if swamped) and muzzle dimension of the barrel.
Bore dimension and rifling depth if possible. This is something I would like to know but if odd number of grooves can be a pain.
Weight.
Length and width of lock. Dimension from center of cock screw to the lower jaw.
Length of forend cap.
Ramrod diameter and what is attached to it.
Depth and width of the wrist at its smallest point.
Depth of the gun from the top of the breech of the barrel to the bottom of the stock/trigger guard at the barrel breech.
Same at the entry pipe and forend cap and forearm width at this point.
Width of the comb where it breaks to the wrist.
Width of the stock at tail and front of the lock. Not counting the lock or side plate.
Dan