"Thanks for the input.I hear people talking about not useing petrolium based products. What is the reason behind that?"
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The main reason folks don't like petrolium products
in the bore is because the fouling from black powder (and some substitutes) combines with the petrolium based oils and forms a very hard, and hard to remove compound. The animal and vegetable oils do not do this.
IMO, the reason vegetable oil is preferred over animal oils is it doesn't get rancid as fast.
Of the vegetable oils that don't get rancid, Olive oil is used in the commercial lubes but IMO, it isn't very good at rust prevention.
Caster oil, as used in Stumpkillers Moose Milk seems to be the best natural oil for rust prevention.
A few commercial products that don't seem to produce the hard fouling but are good for rust prevention are Birchwood Casey Sheath or similar products that evaporate, leaving a very thin protective coating.
I shouldn't open the can of worms, but in my opinion, modern steels like those used for modern muzzleloading rifles cannot be "seasoned" like a cast iron frying pan. It does not have the open grain boundries that cast or wrought iron has for the oil to penetrate.
For that reason, I feel using soap when cleaning your gun is a goodness because it removes the lubrication left in the bore that has been contaminated with the black powder fouling.
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