Originally Posted by Starman
Originally Posted by butchlambert1


..., think about it! Ever pushed a clean finger across a clean piece of glass?


Pushing ones finger across smooth glass is easier to to do than across etched glass.
etched glass is rougher, more abrasive and thus more grippy. (has a higher coefficient of friction.)

Better you Explain what you are trying to say through science/physics and we will see if it stands up
to scientific scrutiny.

Apples and oranges. There's no disputing that a rough barrel will peel copper off a jacket like when you crashed your bicycle on gravel. The point that Butch is making is that a very smooth surface (think a polyurethane finish on a basketball court ripping your skin off) can accomplish the same thing. I hand lapped that Hart barrel and intend to shoot it soon and see if the fouling has been resolved. I'll post the results.