I am considering taking a few different batches of carry ammo I have.. coating some with extra nail polish.. and leaving some how the come from the factory, and soaking them in water over night and run them through the gun, see which works the best.
Best idea yet. All our opinions won't come close to your real life experience.
And please don't tell us what you got your H&K P7 for. I've always had an itch for that curious squeeze cocker and your price would probably make me gnash my teeth.
Here's a youtube video of some lunkheads shooting underwater in a swimming pool. Most of their ammo seems to work and I doubt they took ANY precautions of any kind whatsoever.