Bigcountry - a lot of this stuff has to do with how smooth the barrel was to begin with. But there is no set procedure that is universal for all guns. If I can get away with cleaning a barrel with just Shooter's Choice, then that's what I'll use. If I have to use Sweet's or CR-10, then so be it. Some guns are prone to hard powder fouling. Some aren't. Also, don't be too afraid of JB paste (or USP Bore Paste) - usually 20 or 30 strokes is usually all it takes.

The only thing that is universal, though, is that you have to get the barrel completely clean at the end of the season before storage. Otherwise, pitting is going to eventually get started in there.

Haven't used Montana Extreme. Let us know how it works out for you.