How is it people still believe ammonia cleaners can damage barrel steel?
Take a piece of barrel steel and soak it in ammonia. I did that test 50 years ago. I took a couple of slices off a blued barrel and left them in Sweets 7.62 for a week - no affect at all. Left them for a month... no effect on the bluing nor the bare metal.
As the above post (119) stated, I believe those who think ammonia caused damage saw faults and flaws that were masked by fouling and the ammonia solution exposed those faults and flaws.
What the ammonia can do is clean the steel so well that if left clean and dry the steel will be susceptible to rusting... that's it. So after cleaning wipe your dry bore lightly with a gun oil. Wipe it dry before firing.
Nailed it. Thank you