In my Green Mountain barrels, 1:7 Ballistol:water has proven to work best. Incredible precision when optimizing all components and shooting from a rest. My best combination is very tight ( dry patch of a lite canvas, .020 compressed, lubed as described by our friend Dutch-GBNF, .500 ball) very tight but shoots like a laser. I’m talking about 10 ball’s going through one hole I can juussst about cover with a quarter, from 50 yds . That’s my first shot. On deer and hogs from 25 out to 100 ( actually measured), I haven’t needed a second shot but would definitely have to wipe the bore if I did, or carry a “ backup combination” with a slightly smaller ball, thinner patch, possibly lubed with mink oil. To each their own.