So if I boil this down...

there is no need to de-cock guns with coil springs

de-cock leaf spring double guns by disassembling and using a horn block to cushion the pins on release- unless some de-cocking provision has been made during the design of the gun

Do I have it right? Snap caps have always made me nervous anyway- I always took the gun out on to the back stoop to use them! Safe not sorry.