Let me ask you one question. When target shooting, can you pull your bow back without taking it off of the target. I notice some guys that have to stretch and wrench their upper body when drawing their bow. These are the same guys that tell me that they always get caught drawing on a deer.
I take great precautions to make sure that I can pull my bow back with as little movement as possible.
Maybe when at home you move around like this when practicing but when in the field you are trying to be still. If this isn't the case, I would say it is just butterflies and maybe turn it down a little.

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