Tomorrow i'm to receive AIRFORCE Texan 257. This will be my 1st Texan. I will be using it to hunt woodchucks and coyotes. I would like to hear from airgunners who have been owners for some time now, what grain slugs do you use and what power wheel setting? As of right now,, I want to shoot tethered 9 liter CF tank and i have a inline regulator that can be adjusted.