RE: How many f.p.s. are lost with the wisker bisket?
If you like the hunting features of the biscuit but want to maximize fps, try-
1- Making sure you have the correctly sized biscuit for your arrow.
2- Trim the backside of the biscuit.
3- Use less helical/offset vanes/feathers.
4- Buy an '04 replacement biscuit, the one with brown/black biscuits.
Many have reported being able to eliminate almost all fps loss and still retain the desireable qualities of the biscuit. No reason you can't too.