Quote Originally Posted by Aeson View Post
'Grape' refers to the shape of the munition - it looks like a bunch of grapes - not to the size of the shot.
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Also, I invite you to peruse the Ordnance Manual for the use of Officers of the United States Army, 1862 edition, if you disbelieve me that the balls used in canister are smaller than the balls used for grape.
Quote Originally Posted by Rogar Demonblud View Post
As I understand it, canister is essentially a lot of musket balls crammed into a cannon-sized shotgun shell.

And the OP says nothing about restricting chemistry. Only electronics.
Evidently I was incorrect, thank you for the correction