http://www.bowsite.com/bowsite/features/practical_bowhunter/penetration/index.cfm

With a 430 grain arrow flying 275 fps I am at 72lbs and 3x the needed amount. I could lose 114 fps and still kill. This is tempting me to turn the bow down a bit.

How much KE do you have?
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Shed hunting and trail camera addict

"It's not whatcha got, it's what you give." -Tesla

"In every walk with nature one receives far more than he seeks."
-John Muir