Boys, boys, boys, I love you guys because you have strong knowledge and make some very compelling points that support your statements.
I think these arguments are very similar to those that fuel our manufacturing industry. That is why we have some very dedicated archers who use only mechanical headss and some who are locked to fixed blades. There are certainly pro's and con's for each type of head and it almost becomes a religious issue with some people.
That said, I think it would be great if we could do some additional testing as Super 91 is planning and come up with one or more specific configurations in both mechanical and another in fixed blades that are performing to our highest standards and can be recommended to our members.
This way everybody can maintain their own choices as to which head design they prefer. Maybe along the way we'll find out that on the TAC15
's one type of head does considerably out perform the other and then everything else becomes a dead issue.
Similar to Len's testing results, let's see some test data to support our theory's, since that's an impartial engineering approach we can all agree on.
Getting more than a single arrow to fly and group well has been an ongoing challenge at long distances with these xbows, so we have a great deal of work to do before we can achieve optimal performance. Everybody's help and input serves to help us reach that end.