Quote Originally Posted by RJW NZicon View Post
I'm sitting here playing with the insides of my Fultons no1mk3 and wondering if the three internal springs are situated exactly on nodal points, or not ...
Looking back through the Text Book of Small Arms - which has hundreds of pages of ballistics analysis - and other contemporary sources, its clear they fired of millions of rounds just in testing and development. IIRC (brain fade) one book even has spark photographs (early high-speed photography) of barrel behaviour during the firing sequence. I guess they did a pretty good job of identifying barrel harmonic points through inspired trial-and-error. Its interesting that some No1 rifles can be so sensitive to tiny adjustments of the inner band screw & spring - clearly the inner band does indeed sit on crucial location on the barrel.