The kind of steel in the barrel? Interesting thought, but I have all brands of rifles and they are all cleaned the same way and with the same results. As for that Butch's Bore Shine, I went and checked my supply and see I have two different kinds???

My favorite cleaners are; (llooking at my cleaning shelves)

[ul][*]Birchwood Casey #77[*]Butch's Bore Shine[*]Butch's Black Powder Bore Shine[*]Black Off -Rusty Duck[*]Breakfree CLP[*]J-B Bore Paste[*]Birchwood Casey Bore Scrubber[*]Isopropyl Alcohol[*]Soap and Water[/ul]
I wonder if there is a difference between the Bottle of Butch's Bore Shine and the Butch's Black Powder Bore Shine. The bottle that states Black Powder is plastic and it looks more like an eye catcher then an actual label. I guess I will have to check the different on line stores and see....