1) Clean the guns, the barrels have been proof fired for sure.

2) Use the break-in procedure (your annealing the barrel). I use: clean after every shot for the first 10 shots, then every other for the next 20, never fire over 3 shots with out letting the barrel cool. The reason you use graphite (dry carbon, not grease) is to coat the barrel (and tighten it) before you shoot a copper bullet down it, there by reducing copper fouling, this is called squibbing. Bullets coated with moly or boron is a different story and used for a different reason. If the barrel has been oiled to protect it from corrosion (should be), run a patch with lighter fluid down it before you fire it, burnt oil is bad.

Take care of your weapons and they'll take care of you.

Congratulations on your new purchases.