I just got finished shooting my S&W 29-5. The ammo I shot was messy and my gun has powder all over it. Is Hoppe's no. 9 safe to use on the blueing? I also use powder blast on my shotguns, but am not sure if it's ok to use on my smith.
From my experience the Hoppe's No.9 won't hurt your bluing as long as you don't soak your weapon in it, you wipe your gun down as soon as you are done with it and then a super light oiling afterwords. It does have ammonia in it, and you can smell it during use. Ammonia can cut just about anything if it's on it long enough.
But take heart, Hoppe's has been around longer than I have and if it would damage a gun they would have been out of business a very long time ago.
It is a good cleaner if you have light to medium fouling or residue, and it's fresh. Old residue needs a more effective cleaner.
Any other opinions and viewpoints are certainly welcome wheather I'm right or wrong.