Original marks appear to be stamped on the bottom of the barrels, forward of the flats, but are hard to make out. They appear to be 1904 rule 1 1/4 oz marks with bore marked as 12, so yeah, at .740", they appear to have been honed.
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"Serious rifles have two barrels, everything else just burns gunpowder."


"Serious rifles have two barrels, everything else just burns gunpowder."