I don't see where it would be. Usually you need some amount of electricity flowing through the metal to promote galvanic corrosion. As an example, your electrical system in your house is grounded to the plumbing. Aluminum stereo amps. in your car are grounded through the casing. Now, I could be wrong but I have never heard or experienced such a problem as this with rifles/mounts.tenexx said:Is galvanic corrosion a serious problem with non-steel scope mounts?