Here is a dummy cartridge I know nothing about nor could I find information. The bullet is of natural wood. The case has no primer or powder charge. There are three rings cut into the case. I am assuming this is a function dummy of some kind but for all I know somebody did it in their garage. There is the circle on the overstamped onto the headstamp which might indicate a reload. I have bad eyes and it looks like K2 to me, which would be Kynoch in Standish. See photos below.
I would appreciate any information about or insights about this cartridge.
Thanks in advance.