Phade, I shoot a ton of arrows just like you ... partially because I'm new, partialy because I love shooting.

Cloud 9 is right - it's the first arrow of the day that counts the most.

I was also having a grouping problem at first, and I finally realized that I was "ruching" somewhat, in that I didn't FULLY and COMPLETELY concentrate on each and every shot.

A buddy helped cure me of that by insisting that I only shoot one arrow at a time - instead of three per "round". I shoot at a paper target stuck to a carbon-stop bag and simply mark the first arrow's impact, then shoot another, mark it, etc.

You might want to try that - it might slow you down enough and force you to concentrate (if that's your problem).

I hope this helps.