Help with making a cannon

[jude]

I'm wanting to make a 12 lb howtizer. Non Firing of course but full size. Wondering if anyone knows where I can buy a pattern for the carriage?
Also can anyone tell me the outside diameter of a 12 lb barrel. I saw the bore is 4.62" but wondering the outer diameter?

 

[7th Mississippi Infantry]

Paging @ucvrelics.

 

[UCVRelics]

@jude, I build firing cannons and should be able to help you out with what you need. If I was going to build one I would make it a firing one. I have the plans for the 6lb 12lb and 3 inch field gun. I will PM you