RE: What is efficient enough ?.....
In my opinion...6 inch groups at 20 yards is not efficient enough for hunting. At that consistancy, you will have a big chance at losing/wounding and missing deer. Never know, it might be big ben that you put a bad shot on and never find but ends up being coyote lunch. But don' t worry one bit.....we all shot like that or worse when we started. I know I did. When getting ready to bow hunt....practice, practice, practice, practice and then practice some more. I did that same thing and can shoot 2" groups at 20. Most days...LOL I' m not saying that being able to hit those groups makes me a good hunter, but atleast knowing I can shoot that takes that one thing out of the equation. I would also suggest that when your practicing....setup shots you know you will take in the wild. Confidence only gives rewards.