It isn't unheard of to 'short cycle' a pump action.
I owned what has still got to be the scariest shotgun ever sold; a 1897 Winchester external hammer pump in factory riot configuration.That dog ear laid back left no doubt as to it's intent.
Then I went even more failproof. I bought a belgian guild gun in 16 guage with hammer sidelocks and cylinder bores.You want to really impress people? Slowly cock both hammers back on a snake eyed double.
A perfect under the bed gun, leave the chambers loaded, and the hammers down. Danger threatens, and Click, click you are ready.