I just dredged this little item out of my trash heap. I bought this years ago on e-bay from Canada. Once I got it in hand I was disappointed that it was a cut down casing and paid it no notice till recently. The base is standard 6pdr Naval, rim dia at 2.990" or 75.95mm. Cut down length is 9.1875" or 233.36mm and mouth is 2.535" or 64.39mm. I was trying to decide what to do with this piece of trash, and finally took a good second look at the base. It reads, "6Pdr R FG", over, "FA 1905". Primer reads, "F A", over, "5 13 8". Three punch marks which I assume mean three re-loadings. I did do a search here to see if it had been mentioned, but nix. Does ANYONE have information on this gun? I can't find any info on the net about either a "6pdr Rifled Field Gun" or "6pdr Repeating Filed Gun". Thanks, Bruce.