ORIGINAL: kevin1
Thirty years of no maintenance was what caused the rust , not the Bore Butter . I've never used anything else and my bores shine like mirrors .
Wrong!
The Bore Butter "natural" components/ingredients break down over the years.... either forming new moisture underneathduring decomposition (or) moisture wasn't entirely removed during the original application.
Besides, I have seen more than one name brand gun oil protect almost endlessly- using only one boreapplication - for 30 years.
Keep using it Kevin... keep-up your no-mistake applications and occasional checkups/re-applications. If not, then the rust time clock begins it's countdown to destruction.