QUOTE(ButchA @ Oct 1 2005, 10:54 PM)
4" high with a heavier grain broadhead? Weird.... That defies the laws of physics!
[snapback]11889[/snapback]
I agree !!
The actual results were (all shots were at 20yards) ...
~ +4in ... 125gr Field Point
zero ....... 100gr Montec Broadhead / tried another make and they are the same
~ - 4in ... 125gr Montec Broadhead / tried another make and they are the same
If Indexing with O-Rings doesn't help, I'm pretty much just going to have to accept the fact that it is due to areodynamic differences between the Field points and Broadheads.
I had initally thought the Field points were 100gr, but this had my curiousity up enough that I weighed both the Field Points and Broadheads. I was floored when the Field Points weighed 125gr, rather than the 100gr that I had initally thought.
I'v read all sorts of articles on "Bow Tuning", but all of the articles I could find were written around Bows, rather than Crossbows. There don't appear to be much that you can change on a Crossbow.
Right now, I can hit 3 out of 3 in an area about the size of a 50cent piece at 20 yards and I'm about double that area size at 30yards and the arrows seem to be nice and level impacting the target. So I ain't worried about it too much !!
99er