Back in the 1890s our ammunition companies offered 10-gauge shells in lengths from 2 5/8 inch to 3 1/4 inch. While the heaviest loads the ammunition companies offered were 1 1/4 ounce, I'm sure many old timers were stuffing a lot more in those long cases. The 10-gauge had pretty much settled in to 2 7/8 inch by the turn of the century. NPEs in the various lengths were still cataloged for a while, but none longer than 2 7/8 inch survived The Great War.
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