There is no VooDoo, but where I live it is very humid, and if you don't completely strip your AK or SKS and use a toothbrush and Dawn detergent on every surface that was exposed to the powder residue it WILL rust.
There is no hosing it off with a water hose it HAS to be scrubbed.
So a complete teardown for only maybe 2 or 3 mags is a no go for me.
I haven't shot my AK74 in 4 or 5 years because I hate cleaning it and the ammo is so expensive I don't want to do 300 rounds or more range sessions like I used to with it. It's just not worth it to shoot it anymore.