in most instances poor grouping is usually the shooter. can be caused from inconsistant anchor point punching the trigger or torquing the bow.

i have a little routine i go through with every shot. i first get my grip right before drawing back once at full draw with eyes closed i get to my anchor point then open my eyes if i have to adjust to get a clear view through the peep i let down and start over. once at correct anchor i make sure bubble is level and sight is centered in my peep. then i slowly bring the pin down on target. as the pin starts getting close to target i focus on tightening my finger on the trigger. when pin is where i want it a gentle squeeze is all it takes. dont forget to keep aiming at the target until the arrow hits.