Talk:Muzzle energy

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I think that the number "450437" in the formula "E = m·v^2/450437" needs to be shown where it is gotten from; otherwise, the person reading the article is left wondering where the 1/2 went and where the 450437 came from. —Preceding unsigned comment added by 69.253.236.36 (talk • contribs)

• I made a few changes to bring some continuity to the article.Greg Glover 02:00, 24 March 2007 (UTC)

The numbers for muzzle energies in ft•lb_f and J are inconsistent: 350 foot-pounds are equivalent to 475 Joules, rather than 540, for example -- it's reported to be 14% higher. So which ones are correct, I wonder? I'm using the (exact) conversion factor of 1.355 817 948 331 400 4 Joules per foot-pound, but rounding to the nearest Joule here. --Wtrmute (talk) 16:03, 7 December 2007 (UTC)