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Air Gun Home Forum Index » General Air Gun Questions and Topics » What does FPE Stand for..
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What does FPE Stand for.. 
PostPosted: Wed Jan 14, 2009 3:21 pm Reply with quote
Dussalater
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Can someone tell me what FPE means. And if they know what benjamin 392's FP is and what is good and what is bad.

Thx for looking
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PostPosted: Wed Jan 14, 2009 4:08 pm Reply with quote
rsterne
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The formula is:

FPE = W x V^2 / 450240

FPE is energy in ft. lb.
W is pellet weight in grains
V is velocity in ft./sec. (squared in the formula)

Bob

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PostPosted: Wed Jan 14, 2009 5:12 pm Reply with quote
Rogerflat
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The real question is "How is FPE relevant?"

The answer: It tells you how powerful your gun is.

FPS on the other hand just tells you how fast it shoots the projectile. Which is meaningless in and of itself.

FPE is the number that you should focus on when it comes to gauging your rifle's potency. FPS is what you focus on when it comes to consistency.

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PostPosted: Wed Jan 14, 2009 5:33 pm Reply with quote
broommaster2000
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And that is confirmed by this forum's officials. Mr. Green

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PostPosted: Wed Jan 14, 2009 11:34 pm Reply with quote
Slavia
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Quote:
The formula is:

FPE = W x V^2 / 450240


You can also use the calculator on the main page of this forum:
http://www.airgunhome.com/pages/calculators.html

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PostPosted: Thu Jan 15, 2009 4:07 am Reply with quote
broommaster2000
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Sssssh! Don't tell him yet! Mr. Green

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PostPosted: Thu Jan 15, 2009 9:38 am Reply with quote
Slavia
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Quote:
Sssssh! Don't tell him yet!


His AGH dossier indicated that he has double 0 top secret clearance, so Dussalater is O.K.

By the way, Broom: Your dossier includes a Groningen police file from July 23, 2004 at 0126 GMT. Something about a pecadillo involving a Swedish flight attendant, a railroad locomotive, and a box of cornflakes. Did you ever get that resolved?

Dussalater - peruse the main page at your leisure. There's a lot of good stuff there. The glossary is a good place to start:
http://www.airgunhome.com/pages/glossary.html

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PostPosted: Thu Jan 15, 2009 9:57 am Reply with quote
broommaster2000
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Slavia wrote:
Quote:
Sssssh! Don't tell him yet!

By the way, Broom: Your dossier includes a Groningen police file from July 23, 2004 at 0126 GMT. Something about a pecadillo involving a Swedish flight attendant, a railroad locomotive, and a box of cornflakes. Did you ever get that resolved?


She... I... The coal... The Wodka... It's all a blur...

And why do I have a Tattoo saying "The Flying Dutchman" on my behind... Neutral

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PostPosted: Fri Jan 23, 2009 7:52 pm Reply with quote
sniper
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my mac-1 392 hits 24fpe @14 pumps with kodiaks. the modified is almost twicw the power of the stock model. that's 21.1 grains around 720 fps.

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What does FPE Stand for.. 
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