Search:

Sulphites and moisture form sulphurous acid which first neutralizes the washing soda carbonate and then does the damage to the steel. So it would appear I've kind of shot my first statement in the...

Sorry to be a "Pedantic peter " but it's a common misconception that black powder residue is acidic, it's actually slightly caustic due to potassium carbonate and sulphide in the residue. Iron and...

It looks quite minor you should see some of my 45/70s that have been left uncleaned for a while with BP residue a simple wash in vinegar and rinse and they are as good as. In in a low power/pressure...

May be copper due to a change in the metal caused by powder residue and moisture during storage, however it's not going to affect it's performance.