Problem ! Have a look at these:
These are very old canon balls I found on display at an old fort in Umer Kot, some distance away from Hyderabad. And the canon of course:
But these balls really had no balls. No warhead, you see. Now we have the privilege to use Oerlikon, Bofors etc guns with very destructive shells to kill the human beings on the other side.
Hope you enjoy.