How do you calculate the power factor of your cartridge?

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KeithB
February 9, 2008, 05:39 PM
Searched but don't find a formula.

Thanks
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rcmodel
February 9, 2008, 05:44 PM
Power Factor = Bullet weight (in Grains) X Velocity; (in Feet Per Second)/1000

Here is a calculator for energy, momentum, and Tayler knock-out factor.
http://www.handloads.com/calc/quick.asp

http://i81.photobucket.com/albums/j219/rcmodel/KTOG/1224.gif
rcmodel
birdbustr
February 9, 2008, 05:45 PM
http://www.eskimo.com/~jbm/calculations/pf/pf.html

Here's one.
Seafarer12
February 9, 2008, 06:11 PM
Only power factor I know how to calculate is for electrical power factor.
KeithB
February 9, 2008, 06:21 PM
thanks
Sport45
February 9, 2008, 11:53 PM
Only power factor I know how to calculate is for electrical power factor.

You're good. I forgot how to do that shortly after passing EE for "Rock Crushers" in college.
Seafarer12
February 9, 2008, 11:58 PM
Basic trig, no big deal.
Now ask me how to size an orfice for flow measurement, that might take awhile.
Sport45
February 10, 2008, 11:04 AM
That makes me feel better. Those calculations are a snap.
(Javalina '82)
1911NM
February 10, 2008, 11:50 AM
USPSA website, .pdf what you want of the rules, but the PF formula is just what RC posted.
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