There was a TV show in the early 90s that built a cannon to compare the relative explosive power if gunpowder and petrol, firing a can of lager. As you do.
First, one teaspoon gunpowder. Can plops gently out the end with about as much force as a dry w**k.
Second, one teaspoon petrol. Clean over the next door field.
Cannae find it on YouTube. The lad who helped build the cannon used to live in Tod.