Bore Butter, 1000 Natural Lube, what ever you want to call it.. is still used by many people to "protect" their rifle bores. The idea behind it is to season the bore so the projectiles slide and load easier, and fowling does not stick in the bore. So you basically wax your bore with the stuff. The idea to protect is, the rifle is clean, and DRY and then you seal the metal with the wax again. The problem is, any mistake and you will have a rusted bore. I used the stuff for years, and all I ever got was brown crud patches, and bad accuracy. Why? I was using the stuff wrong most likely.

Bore butter and sabots normally do not mix although some people use it and it works for them. The idea of the sabot is to sit in the barrel with sufficient tightness to give a good seal. My Black Diamond XR manual even tells me not to use bore butter and sabots I believe I read.

Bore butter is a good conical and patch lube. Other then that I have little use for the stuff. Would you smear the bore butter down the barrel your center fire rifles? Probably not. So why use it in your muzzle loader. All you need do is clean your muzzle loader and make sure the barrel bore is dry. Then use a quality gun oil to protect it. Some people have found other barrel treatments even.