Military weapons in the era of the Lewis and Clark expedition were almost all muzzleloading guns. They would use blackpowder, cloth patches, and lead balls for their ammunition. The most common weapon brought on the expedition was the 1795 Springfield Musket which was a 69-caliber gun, meaning it shot a ball upwards of .69 an inch in diameter (though it was likely closer to .64-.66 inches to make it fit easier down the muzzle).
If you’d like to own a piece of history now is your chance to get your hands on a musket ball, now lead free for your safety, perfect for conversation starters or a gift for the history nuts in your life.
While this is a musket ball it is not certified nor safe to be used as actual ammunition for use in your flintlock weapon.