To everyone who has participated in my sometimes "unusual" threads: I apologize for being unresponsive recently. I obtained the second of two multivertebrae spinal fusions in the last 15 weeks on August 6. This is the first time my guard-keeper has allowed me this liberty.
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In my research on AEF ammunition for 12 gauge Winchester Model 1897 shotguns, I have identified 00 buckshot loads as having six pellets and nine pellets. Sources appear to be comparably trustworthy, so I request assistance in identifying which was in general distribution and use "in the line" by the AEF.

You might send that question to Bruce Canfield at The American Rifleman.Just a thought.