Wes Parrish said:
I'm no expert on this issue, but it appears a little extra head weight is beneficial with the shorter crossbow arrows (bolts). Have just noticed that most of the so-called "crossbow" broadheads are heavier (like 150 grains) and the customer feedback suggests they are advantageous over lighter heads.
wes you are correct
IMO
xbox up to 300 fps light weight mechanical or fixed blade
over 300 fps heavy fix blades or special designed mechanical 100 gns
rubber bands will break over 300 fps
slower crossbows can utilize fix blades in the 100- 125 gn head weight however when you get a bolt going over 325 fps or more it need to be a mechanical or 150-175 gn fixed head
pay no attention to what manufactures claim for speed the only way to know is run it through a chronagraph
I have crossbow killed deer with
wal mart cheap fixed blade 100 gn
cabelas 100 gn (muzzy copy) fixed blade
rocket sidewinder mechanical 100 gn
nap nitron 3 blade
slick trick 100
excalibur x-act mechanical
my old barnett and horton hunter 150 shot about 250 fps
both shot well with mechanical heads (rocket sidewinder)
slick tricks were great
horton 175 shot 289 fps worked great with slick tricks
but when i got my 2009 excal equinox it shot with their firebolts 375 fps
i could not get 100-125 fixed heads to work worth a dang even my beloved slick tricks
so i went with the 100 gn excal x-act mechanical and never looked back
accuracy great death is imminent
killed about 6 with them now including my 181 inch buck none ran over 60 yds