It does sound like Phil was trying to slam the makers of cap and ball guns doesn't it?
By saying it didn't register above zero it sounds pretty bad but, there are several Rockwell hardness scales and I seriously doubt that the material registered zero on all of them.
Actually, the Rockwell scale most folks think of when they are talking about hardness is the "C" scale. It was designed for the harder materials, not for things like low carbon mild steel.
A hardness of zero on the Rockwell C scale is a hardness of 152 on the Brinell scale.
That's about average for the low carbon cold drawn steel most muzzleloaders are made from.
Oh, OK. Sorry, I didn't mean to bore all of you folks with the technical talk again. :redface: