Can some one point be to an easy method of converting muzzle velocity to ft/lbs please. Just had a MV reading of 690fps but I have a mental blockage when it comes to maths.
Ta
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Can some one point be to an easy method of converting muzzle velocity to ft/lbs please. Just had a MV reading of 690fps but I have a mental blockage when it comes to maths.
Ta
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And then an ice hockey game broke out: http://www.youtube.com/watch?v=G0woZ...layer_embedded
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Or, if you don't wish to know how it works
Weight of projectile in grns (not grms) x velocity x velocity all divided by 450800
And then an ice hockey game broke out: http://www.youtube.com/watch?v=G0woZ...layer_embedded
son got MOM in world championships: http://www.youtube.com/watch?v=ZoCcYwNJxv4
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http://www.shooterscalculator.com/bu...tic-energy.php
Took almost three and a half ten-thousands of a second to find, too.
BTW, if your pellet weighed 15gr then the ME is 16ft lbs.
tac
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I always thought it was 450240Originally Posted by NigelG
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The constant is 2 x 7000 (grains per pound) x gravity in ft/sec^2.
450240 comes from using 32.16 as the value for gravity.
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to be pedantic, it's 32.174 poundals in a pound, which gives 450436
Rounded up to 32.2 for ease if just doing it long hand
But..... If splitting hairs then the correct number should be used, it could make that difference of 0.01 ft/lbs
Last edited by NigelG; 16-09-2015 at 12:28 AM.
And then an ice hockey game broke out: http://www.youtube.com/watch?v=G0woZ...layer_embedded
son got MOM in world championships: http://www.youtube.com/watch?v=ZoCcYwNJxv4
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a phone app.......?
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Yes, there's plenty of them for Android (and I guess for apple too). Most are marketed as airgun muzzle energy or ballistic calculators but you can input any likely MV and bullet weight.
Good deals with: Muskett, Dreben, roger.kerry, TALL, Helidave1, Chelseablue, Leeroy7031, Mousemann, pnuk, Practical, NEWFI, HOOGS, Webb22, lazybones1416 and deanw5262 among others. Thanks Guys.
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