RE: Shotgun
Taking the bluing off won't hurt it but pay attention to a wet gun from now on!
If the bluing bothers you take it to a gunsmith. You might even want it re-done in Matte finish at this time to cut down the glare.
Now on any wet gun - NEVER store in a gun case but take out - open the action and dry in a coner for a day then clean and oil lightly. Also open the gun case used as far as you can and dry that too!
I learned the same way you did - Oh and never use scothbrite - use a 0000 of steel wool or better yet a brass wire brush....
JW