The reason the military used to use boiling water to wash out corrosive salts from barrels was that the heat of the boiling water ensured that the barrel and another other metal that it came in contact with, got so hot that they basically dried themselves. A wipe through the barrel, let it air dry until cooler, then oil.
Get a small funnel that fits the chamber and do likewise.
Get a small funnel that fits the chamber and do likewise.


















































