I'm not selling the idea of using non-petroleum base lube in a muzzleloader, but Facts are Facts. Any product that contains petroleum will turn to tar when heated. Muzzleloaders get HOT.

Since I've been using T/C's T17 Natural Lube to season my barrel my Omega loads easier and smoother.

1) I cleaned the barrel until it was super clean using Hoppes 9 , brush and steel wool.
2) Coated a patch heavy with T17. Swabbed the barrel
3) Loaded it with 100 gr. of Triple 7 and Hornady .50-Caliber Conical Bullet, also coated with T17.
4) I repeated this procedure thru 5 shots with only swabbing the barrel with T17 each time.
5) Swab out the barrel with a 50-50 mixture of Windex & Alcohol.
6) Now I'm ready to do some shootin'
7) After shooting I swab out the barrel and run a patch with a light coating of T17 thru the barrel.
8) When I'm ready to shoot again I use the 50-50 Windex Alcohol procedure.

I learned about seasoning from my grandmother who taught me how she seasoned cast iron skillets.

When I put the gun up for the season, I do a super clean as above, run a couple of T17 swabs thru the barrel and rub the exterior metal parts down with the T17. Then coat the breech plug with with CVA breech plug anti seize.

I've got a couple of tubes T17, but I've heard Ox-Yoke Wonder Lube works the same way.