This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
If it is 20mm it looks like the 20mm X 128 Oerlikon. Problems with this guess, is that the 20mm X 128 is typically a steel case round, and it was developed in the 50s.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.