ha ha!
have you given the cannon a name?
I was thinking of the "Thunder Trumpet".
(
finnbar has officially retired, Tue 26 Oct 2010, 17:37,
Reply)
It will fire a 3" diameter potato
a little over 1/4 of a mile with about 1/4 second's spray of hairspray.
(
LordManley twitter.com/LordManley, Tue 26 Oct 2010, 17:48,
Reply)