none of the above...
The link below shows you how to boil your gun.
Looks like the business, this guy has some really informative videos.
https://www.youtube.com/watch?v=arcosYVsfCM&t=1334s
He has a video somewhere which goes into detail about the "carding wheel" he uses to polish the scum off of the blued steel after boiling.
I cant find that video, I suspect he has restricted the video to his Patreon subscribers, I think Ill sign up as his videos are bloody good.
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