One of my buddies, who is a serious hunter but not a real serious target shooter, tried them. He thought it was an easy way to build arrows without having tobuy a fletcher. The arrows as I recall,grouped about 4to 5" at 20 yards, and around a foot at 50 yards - which is about as good as he can shoot. I didn't try them out of my bow since the arrow spine was wrong. But he shot a doe last November and had the turbo nock assembly depart the arrow instead of staying with it going through the ribs. Then, of course, he couldn't find the arrow. That was enough to cause him to quit using them. I also kinda wondered if certain rests might cause the turbo nock tocome offas well. Chuck was using a fall away, so no issue with his setup.