Ya actually don't even have to flush with water, use good ol military surplus bore cleaner and ya'll never see any trace of corrosion, Most off the shelf bore cleaners will flush out any corrosive salt residues as well, the key is to CLEAN the weapon not just pass a bore snake through it and call it done, When I'm home we go shoot as a family deal every sunday (our range is in our back yard as our property is backed against federal land on 3 sides out in the Arizona desert, or we drive 10 miles to an old mine in the hills and do a picnic thing) Usually a bunch of friends show up as well and I might have 30 or 40 guns to clean at the end of the day been doing this for the last 12 years and USGI bore solvent is the ticket I've got 5 gallon buckets of the stuff me and a few of the friends will setup folding tables in the yard and everyone pitches in, all the bolts are tore down and most actions stripped and soaked in bore solvent while a few of us go around cleaning the barrels then everything gets re-oiled and reassembled, not one of my guns has any sign of damage from corrosive salts.