Good morning guys,
Many people often suggest firing both barrels at once, unless your hunt is only four feet away, and is about to eat you, there is not much purpose in touching off both barrels at the same time.
Most double barreled guns the wrist is very fragile, with all the wood removed to allow both locks to be installed, does not leave much room for foolishness. Most often you will be gifted with a cracked or broken stock.
Then all you have, is a silly looking hand gun with barrels way too long.
There are several videos on You Tube of unsuspecting victims shooting both barrels at once, getting injured and drooping the gun.
To the original poster, I envy you your find. A Pedersoli .72 cal. has been on my wish list for many years.
Years ago, (late 70's or 1980's I think )I had a Pedersoli double .58, a really handsome gun, which I enjoyed, but foolishly traded away.
It shot round ball very well, mine balls were a waste of time, powder, and lead.