I now have 2 1" smooth bore cannons. One is a swivel cannon, the other is a 1/4 scale mt. Howitzer. The swivel cannon last year was used at period events and fired just blanks. Now that I have acquired the other cannon I have a question. What should be used at ammo for them. Where do you get a 7/8" round ball without spending an arm and a leg. Especailly since they are just for the once in a while firing.