@Balac If this is supposed to be a joke - it is a bad one!! We are building models, and don't want to torpedo any ships, especially, the ships of the country in which I live.
New design USSR torpedo boat project 123K by Piroscaf Scale Models
Try this link
Fully functional realistic mini canons
After completing a slightly longer carriage, proportioned to the barrel I have made some bore depth measurements and marked them on the ram rod illustrating the various working depths that were machined and taken up by the charge load and ball shot for the remaining functional firing barrel...
shipsofscale.com
Checking back I don't see my reply with the link. Here we go again:
Fully functional realistic mini canons
After completing a slightly longer carriage, proportioned to the barrel I have made some bore depth measurements and marked them on the ram rod illustrating the various working depths that were machined and taken up by the charge load and ball shot for the remaining functional firing barrel...
shipsofscale.com