My three arrow groups are tighter than my 6 arrow groups. the more arrows that one shoots, the harder it gets to concentrate on each shot. Out stump shooting, I am always amazed how easy milkweed pods are to hit out to 40 yards with one arrow. Put a picture of a milkweed on my target and then go way into my neighbor's yard to get to that 40 yard shot, that milkweed seems like it is a mile away and the number of hits will no way down. When I was shooting with sights that 40 yard target was not so tough, but out hunting that 40 yard shot was mystery. Hunting shots are not the same as target shots, the train of thought is completely different. I would suggest that once reasonable accuracy is gained, the next big improvement is being able to use that accuracy in diverse situations and at challenging timing situations. One of the hardest things to learn is shot timing and getting off a smooth accurate shot when the game is not cooperating. I hunt mostly on the ground, and in nearly 50 years of hunting deer with a bow, I have seen very few game animals that act like targets and stand at the perfect place and angle for a good shot. So as I said, once that target shooting thing is going good for you, the next step is to see how many situations you can make that accuracy work for you.