Quote Originally Posted by MrChipShoulder View Post
This is the crud that is coming out of the Le Page pistol after 7 days from cleaning.

https://ibb.co/MnCxLHP

The pistol was washed out with ballistol until the patches were totally clean.
The bore was dried with patches and then oiled up with a mop with pure Ballistol.

Our house is dehumidified and a constant 20c it's also summer now and not rained in 2 weeks.
Hmmmmmmm, it surely do look like rust to me. I've no idea what to suggest to you - I don't have anything to go by as an example since none of my guns, old and very old, have ever looked like that at any time.

I'd be grateful if you would allow me to post that image on muzzleloadingforum.com, where about a 1/4 million BP shooters might have a better idea of what to do.