Modern SAA (Single Action Army) revolvers have a safety built in to prevent accidental discharge through dropping or hitting the hammer (I have a Ruger Super Blackhawk and Blackhawk in 41 Magnum).
If this is a true replica, the firing pin is built into the hammer. Used to have a true 45 Long Colt SAA. Had to be careful, and carry with an empty chamber under the hammer.
I also re-load my ammunition. Once when I was putting powder in the brass I missed one. When I fired it (revolver) the primer forced the bullet into the cone at the back of the barrel. Luckily it was between the cylinder and the barrel and the cylinder wouldn’t turn. If that happened and it was all the way in the barrel the gun would explode when the next round was fired. Been re-loading since 1968 so I have had a few screw-ups.
I load 12 calibers, rifle and pistol.
Lucky guy! I have a Super Blackhawk in .44 Magnum. It's the handgun I've owned the longest. I've always wanted a (regular) Blackhawk, and my favorite of the available calibers would be the .41.
How long are the barrels on them, and which do you prefer?
You are correct. It would require something to hit the back of the hammer with some force, like dropping it on concrete. And those revolvers should have an empty chamber under the hammer when loaded, just in case you drop it accidentally.