WTH is "mildly corrosive" supposed to mean?
Like maybe your gun will be rusted beyond recognition by dinner-time two days from now instead of just one day?
If you are shooting corrosive ammo, stock up on soap, bore brushes, chamber brushes, and any sort of brush that will fit in any of the places where powder residue might be deposited, and OIL.
Then, when you are done with the day's shooting, drown everything that was exposed to powder residue with hot, soapy water. Scrub the bejeezus out of it, wash it all off with really hot water, then blow it dry.
This is one circumstances where Water-Displacement formula 40 (WD-40) is your friend. Spray the nooks and crannies with WD, give it a good wiping, and grease anything that needs grease.
When you are done with that ordeal, ask yourself whether it was worth it.
If you are delighted, and can't wait to do it again, you have just found your calling.
If you are pissed-off and exhausted, you'll figure out what to do.