Terc, in my experience the cheaper the hammer gun the less likely it is to open with the right hammer cocked. But that may be just coincidence involving the guns I came across.
It is importan to be able to open the gun when cocked because once open then lowering the hammers, in the cold, with gloves, etc, is a totally safe manouver.
Even those that cannot open can be regulated by a smith who understands hammer guns to open.
Re accidental discharges. The rebounding hammergun has a built in passive safety, the notch that hits the sear if the trigger is not pressed, thus preventing accidental discharge. Unless worn or broken, this simple device prevents contact between hammer and pin.
