Here is the muzzle of the .357 Magnum S&W 686 before and after cleaning. I guess you could reverse the photos and say before and after shooting. I showed a “During” picture yesterday of Damsel firing this gun at the range. From that picture, you can appreciate how all the residue generated during target practice can foul up the gun, inside and out.
Not to worry – Damsel takes some Strike Hold CLP and transforms the dirty to the clean in just a few minutes. She took the before and after cleaning photos and I scaled and merged them into this composite image. Click for the close-up.