Re: French artillerie calibers: interesting finding
The British 'Brown Bess' musket had a similar advantage, as it used a larger caliber of bullet than French muskets it would mean that captured French ammunition could be used with little or no disadvantage by the British, while the French would have found it impossible to use any captured British ammunition as they would not fit the muzzle.
"It is in truth not for glory, nor riches, nor honours that we are fighting, but for freedom -- for that alone, which no honest man gives up but with life itself."
Declaration of Arbroath, 1320AD