ORIGINAL: Paul L Mohr
I get you there, but for most people, especially in a hunting application you are dealing with three weights, 85 grns, 100 and 125, or somewhere in between there. That little of a weight difference really doesn't effect spine that much. And if you went any more severe in either direction it may effect your FOC so much it wouldn't be worth doing.
Last time I went to my local pro shop I didn't see any 220 grn broad heads on the shelf

. As a matter of fact most pro shops don't even carry target nibbs because they are geared towards hunters, not target archers. Where I live if you want anything fancy or target oriented you are ordering it from somewhere. I mean some carry some target stuff like nibbs and the such, but the selection is not that great.
I get what you are saying, just don't think it applies to the average guy. Know what I mean?
Paul
I know exactly what you mean, however I like to show a person that the sky is the limit when it comes to tuning proceedures. Then they can choose their own comfort level. I also know that you can get any weight broadhead you want, if you know how to go about it. ( sky is the limit thing) I like people to learn and take a real interest. Get my drift?