Been practicing a bit with my first bow (ever) -- Hoyt Ultra Sport 50-60# shooting Gold Tip carbon fiber arrows with vanes and field points. I use a Tru-Ball release, 3-pin sight with a peep. The bow was set up for me by a good shop. I've actually been pleasantly surprised how easy this is to shoot -- of course with the peep sight and release it's a lot like a gun ...
I usually shoot 3 arrows at a target and try to keep them in a few inches. I work my way from the 10, 15 and 20-yard lines, on up.
Sometimes at the 10-yd line but even more often at 15 or 20, I will shoot some arrows dead on, but one or two will always go a couple inches to the left. This is driving me a little nuts because my sights are either dead on, or need to be adjusted. I just can't tell if I need to adjust left or right.
Adding to the confusion, sometimes when I've shot at 30 yds. everything works out just fine with a nice tight group, but still off to the left. But when I adjusted the sight to move the group, I still hit in exactly the same place. So it seems in that case, all my stray arrows sorted themselves into separate groups.
I suspect I am doing something weird with my left arm or hand, but am not sure what. Maybe clenching my hand, or locking or unlocking my elbow or shoulder differently?
I also notice some eye dominance issues -- I have a lot of trouble picking up the pin through the peep if I don't close my left eye. (I am right eye dominant, but not very strongly.)
I also notice that I've been having some trouble seeing through the peep since one of the segments of string goes across the aperture, and I wonder if it isn't something as simple as whether I look to the left or the right of that!