thanks to all ho answered my waterhole post- i thnk i may enjoy this site this time i am considering carbon - question: is a .001 noticably more accurate than a.003 or a .005 straightness. or is human error more of a problem than a couple of thousandths of an inch. has anyone experimented with differing qualities? question#2: do normal inserts designed for carbon shafts seat straight enough or should i consider the new "HIT" style of shafts. the HIT styles that i see are not available in the premium .001 version-- but if the insert is straighter because of HIT, then i may have an overall better broadhead flight than i would with the premium shaft with the normal standard inserts (assuming that they dont seat as straight). am i offbase or splitting hairs -- can i expect six inch groups at 60 yds with broadhead marked yardage? sorry so long. thanks again