I clean usually clean my milsurp rifles shortly after firing just for that reason, most of my plinking ammo is surplus that I took for a song so I'm sure most of it is corrosive.
EDIT: pics are in this
thread near the bottom of the first page.
all guns lost in a tragic smelting accident.
I never said half the crap people said I did-Albert Einstein
You can't believe everything you read on the internet-Benjamin Franklin
Bean counters told me I couldn't fire a man for being in a wheelchair, did it anyway. Ramps are expensive.-Cave Johnson.