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Air Gun Home Forum Index » General Air Gun Questions and Topics » Easy FPE Calculator    View previous topic :: View next topic  Easy FPE Calculator   Posted: Fri Apr 01, 2011 9:30 pm rsterne Moderator Joined: 15 Jan 2008 Posts: 2998 Location: Coalmont, BC but only if the velocity is 950 fps.... Multiply the pellet weight by 2.... result is the FPE.... Actually, if you consider that 950 fps is a pretty practical limit for airguns both from an efficiency and accuracy point of view.... it's a pretty handy thing to know.... Bob _________________ Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! Airsonal: Too many to count!   Posted: Fri Apr 01, 2011 10:02 pm sniper Silver Status Member Joined: 28 Nov 2008 Posts: 3752 Location: Star, Idaho Smart a$$. _________________ I believe in gun control, If there's a gun around I want to be controlling it.......   Posted: Sat Apr 02, 2011 1:00 am kanyon Silver Status Member Joined: 09 Aug 2008 Posts: 1582 Location: New Zealand V x V x W / 450250 = FPE but you already know that...Don't yer think your simplfiyed version is a bit easyer for joe avarage to remember... _________________ Career Infinity PCP .22 Webley Patriot .25 Hatsan mod 75 .22 Hatsan mod 99 .177 (Quattro & SAS) Kral underlever .177 ............................................. .   Posted: Sat Apr 02, 2011 5:37 am packrat Senior Member Joined: 16 Nov 2009 Posts: 882 Location: Out in the woods...Ellabell, GA. THAT is mighty handy _________________ HEY !! This getting old thing is NOT for sissies...   Posted: Sat Apr 02, 2011 10:55 am Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA So let's see, you divide by the inverse hyperbolic secant of Euler's constant raised to the power of the definite integral as it approaches the limit of dy/dx raised to the x/2 power...Oops! Forgot to carry the one....Drat! the batteries went out on the slide rule. Maybe Rsterne is on to something here. _________________ ¡Listo! ¡Apunte! ¡Fuego!   Posted: Sat Apr 02, 2011 11:14 am domer_pyle Senior Member Joined: 17 Sep 2009 Posts: 523 Wow, the simplest things are the hardest to come by. Good piece of info!   Posted: Sat Apr 02, 2011 11:51 am rsterne Moderator Joined: 15 Jan 2008 Posts: 2998 Location: Coalmont, BC I know it only works for 950 fps.... but it sure gives you a quick way to figure out the PRACTICAL maximum FPE for a given pellet weight.... Bob _________________ Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since! Airsonal: Too many to count!   Posted: Sat Apr 02, 2011 12:10 pm broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands rsterne wrote: I know it only works for 950 fps.... but it sure gives you a quick way to figure out the PRACTICAL maximum FPE for a given pellet weight.... Bob Exactly, thanks for nothing. Now I have to look up a converter to convert FPE to Joule! Not that I remember anything that has to do with numbers. What's a 9 again? _________________ BIG GAP   Posted: Sat Apr 02, 2011 9:06 pm AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6930 Location: "Out There" Oh sure- there's Bob, looking for the "easy way" again... _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront Easy FPE Calculator     Air Gun Home Forum Index » General Air Gun Questions and Topics You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT - 5 Hours   Page 1 of 1   All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum Main Forums----------------AirGunHome Q&AGeneral Air Gun Questions and TopicsPicture GalleryTarget Shooting: Casual, Fun and CompetitionHunting, Pest Control, Varminting People/Events/Airgun Issue Discussion----------------Introduce YourselfThe BS TopicClubs/Events/Regional/Political Airgun Issues Maintenance, Modification and Reviews----------------RiflesPistolsAntique, Collector and Novelty AirgunsBB GunsPellets/AmmoOpticsAccessoriesAirgun Smithing Buy, Sell or Trade Forums----------------For SaleWant to Buy   Note: If you are seeing "Please enter your username and password to log in." Your browser cookies have been reset or you need to register to access the topic in question. Use the 'Register' button near the top left of this page. Click Here for AirGunHome.com Main Page Powered by phpBB © 2001-2004 phpBB Group Partial Styling Supplied by Vjacheslav Trushkin Themes Database.