steve_b_wales Posted April 13, 2015 Report Share Posted April 13, 2015 What's the formula to convert feet per second to foot pound? I've lost the formula. I remember it was something like bullet weight x velocity x velocity divided by ? Quote Link to comment Share on other sites More sharing options...
Salop Matt Posted April 13, 2015 Report Share Posted April 13, 2015 http://www.pyramydair.com/article/What_is_Muzzle_Energy_August_2003/5 Quote Link to comment Share on other sites More sharing options...
walshie Posted April 13, 2015 Report Share Posted April 13, 2015 I' fps x fps x weight(in grains) 450240 although some argue over the value of the constant, it works fine unless you want to be pedantic I'm sure someone pedantic will be along presently. Quote Link to comment Share on other sites More sharing options...
wymberley Posted April 13, 2015 Report Share Posted April 13, 2015 :lol: :lol: Couldn't resist it and just to save HW 682 repeating it all, see the retrieved Post in Guns and Equipment. Quote Link to comment Share on other sites More sharing options...
steve_b_wales Posted April 13, 2015 Author Report Share Posted April 13, 2015 Thanks. Quote Link to comment Share on other sites More sharing options...
DrBob Posted April 13, 2015 Report Share Posted April 13, 2015 Found a useful little website that comes with a built-in calculator: www.airgunsofarizona.com/energycalc.htm Quote Link to comment Share on other sites More sharing options...
Harnser Posted April 17, 2015 Report Share Posted April 17, 2015 I' I'm sure someone pedantic will be along presently. No. There are no pedants on this forum . Well there never used to be ,but there may be a couple or so . Harnser Quote Link to comment Share on other sites More sharing options...
HW682 Posted April 18, 2015 Report Share Posted April 18, 2015 :lol: :lol: Couldn't resist it and just to save HW 682 repeating it all, see the retrieved Post in Guns and Equipment. Eh? what have I missed? I remember a thread a while ago where someone asked what the value was and where it came from, so I calculated it from first principles, with the sources cited for the constants. On that same thread other people had their own favourite values which I agreed will work just as well in the real world when you take into account all the measurement tolerances in the values you are putting into the equation. The point of the post was mainly to answer the question as to where the value came from, rather than to argue that any similar value which only differs by a few % is going to make any noticeable difference to any body. Because it won't. Quote Link to comment Share on other sites More sharing options...
spandit Posted April 19, 2015 Report Share Posted April 19, 2015 www.creffield.com/ballistics.php Quote Link to comment Share on other sites More sharing options...
activeviii Posted April 19, 2015 Report Share Posted April 19, 2015 App on a phone is quicker Quote Link to comment Share on other sites More sharing options...
Mitchiet123 Posted April 22, 2015 Report Share Posted April 22, 2015 I' I'm sure someone pedantic will be along presently. No, someone pedantic will be along "shortly." Quote Link to comment Share on other sites More sharing options...
wymberley Posted April 22, 2015 Report Share Posted April 22, 2015 No, someone pedantic a pedant will be along "shortly." Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.