So, I know what I learned from the internet (it just has to be true). So bear with me. I was looking at a Lefever 16 Ga. Nitro Special. Nothing special about it. Good sturdy gun, no dents and it faces up (is that the correct terminology?) well. Not loose at all with the handguard removed and the lever to the right of center. Blue on the barrels was in nice shape. I had the shop remove the barrels and hung them (it?) from the barrel hook on my finger. Muzzle end produced a nice high pitched 'ring'. Similar, but slightly lower pitch, on the breach end. But in the middle the barrels still rang but at a much lower pitch then the muzzle end. There is no point along the barrel that doesn't 'ring' and it never produces a 'thud'. It just rings at a significantly lower pitch in about the middle. In this Midway video (Edit to link no correct video) the good barrel rings at the same pitch for its entire length. But the Lefever certainly rings at different pitches. Nothing I have read prepared me for that. Now my mind wants to jump to the assumption that the lower pitch means there is some degree of separation. Maybe not much separation, but separation. But being I just learned that I had to 'ring' a barrel(s) I certainly don't have enough information to interpret what I heard. So, does a lower pitch ring, no thud, mean there is separation in a barrel set?