I have heard very good things about Montana extreme, but I still use Hoppes for now. Here is what is said about Hoppes:
"Perhaps the most universally used solvent for preventing rust and removing powder, lead and metal fouling. Quick, super-efficient, safe and easy to use. Flows freely and penetrates rapidly. A favorite with shooters throughout the world. Technical Information:
Removes lead, powder, plastic and copper fouling.
Leaves a rust preventative coating behind.
For use will all rifles, pistols and shotguns.
Ultra-potent, safe and easy to use.
A world wide favorite since 1903."
At this point, I use Hoppes to clean and protect my guns that I shoot 209 out of. I am currently not using any "oil" after Hoppes when I shoot with any frequency. However, when I am going to be putting the gun up at least a month for storage, I use Knights presoacked oil patches after a thorough cleaning.
I don't think I would even consider bore butter with 209. Maybe with the other substitutes that are water souble, but not 209, there is really no reason.
After several shooting sessions, I switch to Hoppes with copper solvent since I am shooting copper covered conicals.
txhunter58
venor, ergo sum (I hunt, therefore I am)