I had one in which the barrel weighed 75 pounds and it fired 35 MM film cans filled with cement or half pound lead wadcutters that would go through a pickup cab at 100 yards. It was a 1/3 scale replica of the 12 pounder main guns on Old Ironsides.

Also had a Coehorn that would fire V-8 Juice cans filled with cement.
It would lob them a good 300 yards.
Had a friend that had a bowling ball mortar too.

They were a hoot. I was the Earl of Chugwater, Chief of Artillery, (I was the only one with a cannon) in the 69th Irish Poltroons.

We had a couple of road apple artillery barrages at ronyvoos.. I also fired the ashes of departed buckskinners out over the mountain side a few times.

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Eccentric old coot