Bore butter always worked fine for me as a bullet lube (Maxiballs) in my Renegades. The last couple years I hunted with a Renegade, I cleaned the bore with the normal water bath (boiling water), then when dry I cleaned with Butch's Bore Shine, then alcohol to remove all oils. I hunt with a clean dry bore.

In years past I did run a bore butter patch down the bore after it was completely dry, for storage without problems. You will get rust if the bore is not completely dry before bore butter is applied.