Finishing a barrel

[royinidaho]

Would appreciate your rust blue formula(s).

I have one that I use but it was copied on an old time fax machine and the face pealed off and I can't read it any more.

All I know is that when the druggist mixed it up (1967) he questioned my use as it is some kind of poisionous. Probably couldn't buy the stuff now.

Does a better blue job than I've ever seen on anything else. Hit it wiith a very fine soft stainless brush and it turns the nicest brown you ever wanted to see. Lasted 35 yrs till I rebarrelled.