Definitely, I'm working on the sight now.
The rifle was stamped .32/20 on the barrel and I thought that it was one of the many thousands that were re-chambered for that round (mainly the rim grouve was deepened) but it won't accept a .32/20 so was probably so stamped to make it look legal in the times when the .310 was deemed to be a military calibre in NSW.
The trick was to turn the rims on a few .32/20s so that they'd go into the chamber (if it was lose enough) and "Yes, Officer, it's a .32/20, see this .32 Winchester round slips straight in".
The .310 is a better and more powerful round anyway in modern re-loadings.
Self Defence is not only a Right, it is an Obligation.
Eoin.