Quote Originally Posted by jmoore View Post
Just forward of the base of the blade the finish had turned rather brown in the shape of the blast cone! Seems the potassium choride salt residue carries all the way out the barrel upon firing. Whoops.

So, there you go, something else to "hose off" after a day at the range.
JMoore,
I have noticed this discoloration also on cleaning rods fixed to Mausers from time to time.

George