Hi,
I am looking for diagrams and measurments to reproduce a Naval IX Dahlgren and a Naval 150 Pounder (or 8") Parrott Rifle. I have found drawings of them and descriptions of the length but no other measurements. What I am looking for is the exact measurements of everything about the cannons. I want to scratchbuild a 1/96 scale model of the USS Susquehanna and according to my research, it was armed with these guns. I want to reproduce them as exact as possible.

Thanks
Bill