Now after you guy's do all the math lets consider our release which is not mechanical....You may have a perfectly tuned bare shaft, and it's point of impact or flight will change with the slightest deviation in your release or torque of your bow/shooting form...It's all magnified bare shafting and can confuse a novice...You must be a very consistent shooter to figure out your proper spine bare shafting...Do the math, slap some feathers on and have fun...
Don
