Assertion: mortar's bore | /r/CapableOf | accommodate the grenade
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text: The action was similar to a flintlock, matchlock, or wheellock firearm (depending on the date of production), but the barrel was short, usually 2 inches (5 cm) to 4 inches (10 cm) long (though some are reported to have barrels up to 13 inches (33 cm) long), and had a large bore to accommodate the grenade; usually between 2 and 2.5 inches (5 to 6 cm).