Cobra Derringer 22 Magnum Revolvers have a double action Trigger for most shooting circumstances. Shooting some critical defense rounds out of cobra 22 magnum derringer. Autos have a different trigger types. It is a handful to shoot, especially with the hard trigger which is a safety feature. Anyone can Learn to shoot the Cobra Magnum easily. It takes two hands just to pull the Trigger and hold it steady as it Shoots.