re: Field Artillery and Cannons

Thanks for the comments.    When I was a kid we use to make these slingshots from a tree limb that had the right Y to it.    Rubber was old car inner tubes, the red ones were the best, piece of old shoe leather for the launch pad.    We (friend I grew  up with) and I did find some old ball bearings and got the balls out of them  for some great ammo.     Of course round rocks worked pretty good also.    There was this abandoned green house, need I say more.    Already had lots of broken windows.   The good old days before TV, cell phones, computer games, made our own fun.