You dont have to have Accuracy or Fouling problems to use Montana X-Treme Bore Conditioner. I use it and have none of those problems. What it does do is Condition the Bore. Mabey not in the way some think, but it does help greatly in preventing Rust, it's easier to clean your Mler after shooting, and Im not sure yet but it may help to Improve Accuracy.
I use both Pyro Powder and Pellets and I dont get a Crud Ring or if there is it's very minimal when having the Montana XT BC applied to My MLer Barrels. Heck what have you got to lose by tying some even though your using BH. I bought 3 Bottles of it along with the Montana Gun Oil 2 years ago and Im still on My first Bottle of Montana XT BC and there's still half a Bottle left.
It's a Ver Good Product and I'd reccomend it to anyone.
I would only use JB's if you have a extremely tight Bore or one that has Minor Imperfections. If your Mler Barrel is fine I'd skip the JB's but would certainly try the Montana Products.
(BP)