The cardinal rule is never put the used swab back in the bottle ; you contaminate the whole bottle ! #2 the bluing does not significantly stop the rust , it simply colors the metal , to stop the rust use Birch Wood Casey Barricad & or was well as fine gun oil soaking for 8-12 hrs , & of course a hot environment opens up the pours in the metal & thins the oil for better penetration
The cardinal rule is never put the used swab back in the bottle ; you contaminate the whole bottle !
#2 the bluing does not significantly stop the rust , it simply colors the metal , to stop the rust use Birch Wood Casey Barricad & or was well as fine gun oil soaking for 8-12 hrs , & of course a hot environment opens up the pours in the metal & thins the oil for better penetration