‘Regenerate’ and cannons?

So the required first pact Regenerate says this:

50% chance to Regenerate* runes, ammo and charges

*Regenerate: Whenever you use runes to cast a spell, fire ammunition from a ranged weapon or consume charges with a charged weapon there is a % chance to generate an additional resource spent

Are cannonballs in a cannon considered ammunition? Will they be regenerated/activate ranged echos?