Artillery - US Civil War

I am contemplating my next effort and it doesn’t seem to fit any existing categories.
I would like to scratch build a 3inch Ordnance rifle.
To that end I purchased this extraordinary book of drawings. Most are actual government drawings for the construction of the actual weapons and their carriages. They are complete down to the size , shape and count of the nails - not kidding.
Still studying the drawings and will be for some time yet - there is a lot to digest . First step will be to decide on the scale - I would like to go big .

a look inside…

I think the site would benefit from a category for artillery.

Cheers- Richard