Originally Posted by Drew Hause
It's simply a calculation Brent, not a measurement, so no SD
Lots of formula out there; this is an easy one for recoil velocity which as you know is not recoil force
https://www.vcalc.com/wiki/gun-recoil-velocity

and this gives you both
https://shooterscalculator.com/recoil-calculator.php

Smart guys have been trying to measure recoil force for > 100 years
“Recoil Device”
http://books.google.com/books?id=inQCAAAAYAAJ&pg=PA346&source

Forest & Stream, July 20, 1901
“The Recoil of Shotguns”
https://books.google.com/books?id=qkMhAQAAMAAJ&pg=PA58
https://books.google.com/books?id=qkMhAQAAMAAJ&pg=PA217

Forest & Stream Nov. 16, 1901
“The Recoil Due to Gas” from The Field, London, using a ballistic pendulum
https://books.google.com/books?id=qkMhAQAAMAAJ&pg=PA400

IMHO felt recoil is impossible to quantitate - too many variables

Obviously I was looking at the differences in the one ounce loads. Of course.Half a pound is trivial, but it suggests that perhaps the formula is curve fitted, and not a first principles formula. I will try to find time to look at the articles later, but right now, having fixed my truck, it's off to Iowa for the opener.

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BrentD, (Professor - just for Stan)
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