Always interesting to me about hammer guns.I have some and I know that when hammer is mentioned,it is meant external hammers.Of course ,I have a few hammer guns that have hammers that are internal--M-21's,L.C,s,Foxes,P-guns etc.They all cock on the open and when shut are not on safe.Unless I put them on safe (non-automatic).I have a Siace external that cocks on open and is not safe unless I use the tang safety.I also have older externals that only cock by hand and there is no safe.With the M-21's, I hunt with gun open as it partially closes to keep the shells from falling out.There are few guns that I fully trust the safety.I had a Kimber bolt 22-250 discharge when I moved the safety to fire.So,with me, I treat every gun as able to fire and my method of safety is to always keep the muzzle pointed so that I am in control of where the projectile is going to go.BTY the Kimber was on target.