I've seen a lot of people shoot, and in my experience 2-3" groups at 20 yards is phenomenal. Twice that would be excellent.
FeelTheHunt, don't be put off by such excellence. Honest 8" groups at 20 yards is quite good, even for someone with a little more experience. I have an attic full of 3D trophies, and 4-6" groups make me happy. With a 6" group, you're hitting within 3" of the target every time, which is fine, and plenty good enough for hunting.