i tried a little experiment since switching over to blackhorn this year. i did not clean my omega i use for hunting from the time i sighted it in in early october, all through hunting season until i cleaned it this morning. i don't really target shoot this gun so i only have about 40 rounds through it this year. i shot and hunted with it in temps from the 60's down through the upper teens., taking one buck without any problems whatsoever. i was a little anxious to see the effect 3 months of fouling had on the bore. a little hoppes #9 and the bore is shiny new, not even a hint of corrosion. blackhorn is unbeliveable! i'm sold