Edam as a weapon

I'm a good two thirds of the way through writing my second pirate story - The Conquest. Edam as a weapon - it came from an idea on Radio 4 a few weeks ago - I listen precisely in the hopes of picking up strange details I can steal for stories. Apparently Edam has been used in lieu of cannonballs, although now I have to figure out what that would change in terms of firing ranges, trajectory etc. I am consulting with the research assistants, some of them have a grasp of these technical things.

The first installment 'The Devil's Rose' is already available from http://tinyurl.com/c9evo5 in ebook form!