My father's uncles passed away in early '04 and the farm sale was in September of '04. After everything was cleared out, Dad bought one farm and yesterday in the virtually empty hay mow I found a couple of small cardboard boxes with some old newspapers, automobile magazines from 1952-1954, a couple of maps from 1951 where they apparently went to Canada to fish, and this:
An Acme No. 15 powder measure in oz. and drams, primer tool, a couple of tins of primers, and a bottle of powder.
I imagine this could have sat undisturbed for maybe 40 years or more based on the ages my great-uncles were and the magazines. I spent time out there when I was a kid and do not ever remember them using or going into the hay mow. They probably hadn't reloaded since the 50's, but will check with one of Dad's cousins who would remember.
The tins are labelled
PATENT PERCUSSION PRIMERS FOR METALLIC CARTRIDGES
UNION METALLIC CARTRIDGE CO. BRIDGEPORT, CT
UNDER ACCESS PATENT
SEPTEMBER 14, 1869
Ballpark age on some of this stuff??