I am looking for Information on how and why these match target bolts work so well. When first looking at those I would have never thought that these could be so accurate.
I am speaking of those unfletched totally front heavvy and short bolts like these:
They are shot from these target crossbows:
They are shot at distances of 30m and a "group" of 1cm (they actually cannot shoot groups, only a single arrow per target because of the accuracy!) is considered bad! Current World record is 298 points out of 300 possible.
Does anyone have some specs on these bolts? Weight? COG? I always thought that a bolt would need fletching to stabilize it in flight and some rotation would add to the stability even more. These only have stabilisation from drag on the small nub at the end. And no spin ?
Also the COG on regular crossbow bolts is just slightly forward of the center while these seem to be totally front heavvy?
Has anyone of you experience with these kind of bolts? Are they only good for short distances?
I think the accuracy is helped by the precision build of the Match target crossbows, AFAIK they use some kind of "sled" riding in the bolt groove to get a consistant release with no side deviation but nevertheless the bolts seem to do quite well aerodynamically.