This past weekend, my colleague and I made a major expedition to two places here in Korea. Both were related to my research area of the 1871 US military action here. In the second part of the expedition, my colleague found something interesting, but a bit baffling--two clusters of approximately 1" iron canister shot, plus several singular shots, in the side of a trail (presumably from a 12-pdr. naval boat howitzer). At first, I thought maybe it was some kind of ground burst case shot, but the shot size and lack of case canceled that idea. My second thought was that it was from point-blank canister fire, where the shot did not have enough distance to separate. I asked my colleague to send me a pic of the clusters, in situ, and will post them when I get them. In the meantime, are there any thoughts on this? Thanks!