Next time you put a new choke in, GREASE IT !!
Not oil, or silicon..........GREASE !!
Most hunters take care of there weapons and clean them after use !!
Bolt, chamber, tube & choke .
Oil is fine on the outside.............. after a solvent wipe down.
If you really love your gun, use a "snap cap" to release the firing
pin spring, for longer use and no miss fires from a weak spring.
Pulling the trigger on a empty chamber will break a firing pin !!