My personal policy is to shoot the gun with the ammo, dust, lint, etc. as carried since the last time it was loaded ...
Not to bust balls, or anything, but it's my personal policy not to drop a handgun into a pocket that has dust and lint in it.
Can't do anything about the dust you pick up during the day, but if you turn your pockets inside out at bedtime and brush them with your hand, you've just performed some useful handgun maintenance.
