686 MG Spring upgrade

[DuneShoot]

Did my normal spring upgrade to improve trigger pull.
Noticed a fair amount of sorta rust inside as well in the cane area.
Don't remember seeing this in older revolvers. Cleaned it up with a light coat of oil.
Will have to tune the mainspring with my reloads once I can get to the range.

Few pic's.

OEM springs and rust:







Cleaned up:


OEM vrs Wilson mainspring:


Wilson:


Changed to the Hogues. I prefer them:

 

[Gas tube]

It’s polishing compound I had it in my 629 mountain gun also.