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Old September 25, 2012, 12:35 PM   #5
Senior Member
Join Date: May 13, 2011
Location: Carolina
Posts: 3,414
The formula is Energy (foot-lb) = Weight (grains) times Velocity (ft/sec) Squared divided by 450395 (fixed constant).
Thanks. I knew there was a formula but I'm lazy and too dependent on my iphone app

I did save it now though.

Did you buy it from an online retailer, or was it a private sale?
Online but I live about 50 mins away so I picked it up. used to sell them for $389 in March. They're $429 now which still isn't bad but they sell out in a day or two when they get them in. You really have to watch the site.
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