The gun is an Italian replica. No clue as to the exact machanism. Mine has:
1. hammer down, firing pin into the primer
2. A notch that holds the hammer just clear of the pin, trigger caught in a recess where it wont pull (easily broken out by a blow)
3. Half cock, the cylinder will rotate to load ir inspect
4. Full cock, my big gun has less than 2 pounds trigger pull, very smooth and light.
Neither the first orc second notch are fool proof or strong enough to pass a drop test. Full cock is supposed to be light for firing.
So, Baldwin thumbed the hammer enough to roll the cylinder, then dropped it. Aim is irrelevant