Okay Dale, tell me this... and I'm asking you because you, like myself, indicated that you are somewhat challenged when it comes to discerning the subtle difference between tones for certain coins
You said above that some of the silver dimes (particularly the deeper ones) are coming in at CO 42-43, maybe not even hitting 44. That has been my experience lately too, and I don't think it is because they are on edge. If there is trash or other targets nearby it can affect the CO but usually slowing down will allow to be able to pick through it and hit solidly on the coin, and the numbers will look more like what is expected. As you said, it seems to be the deeper coins and in particular the ones that are more worn and tarnished that read lower.
But my question is... can you hear a difference in the tone? Does a silver coin that comes in at 43-44, like your barber yesterday, 'sound' like a silver dime instead of a clad dime?