cronograph.
 

I shot my arrows through the crono.My problem is this.arrow 29.5" ics camo hunter 400.w/125gr.shot at 240 fps when changed to 100gr,shot at 265.is this right or is the crono giving wrong info?

RE: cronograph.
 

I like to shoot 4 shots make a change and make 4 more shots. make sure I get the same numbers. I went for a 75 to a 65 and gained 1 fps so that seems a little fishy. go to jacksons archery page and plugin the numbers see what it says.

http://home.att.net/~sajackson/archery.html