i copied and pasted this from the internet [thought i'd share it with you ]
The snake oil "Bore Butter" concoctions of various animal fats and wax are better off left where they came from--the pot of rotting miscellaneous flesh and animal carcasses bubbling at your local rendering plant. The idea that your modern steel barrel can be seasoned like a cast iron skillet has no basis unless your barrel is also cast iron and you cook pizzas in it regularly. Some of the earlier lubricants were outstanding, like sperm whale oil. Bear grease and bacon drippings were never good, but when that's all you have, that's the best you can do.