March 7, 2009, 10:45 PM | #1 |
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Muzzle energy
Is there a formula for calculating muzzle energy. I presume I would need a chronagraph?
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March 7, 2009, 11:25 PM | #2 |
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Yes to be accurate in figuring for your loads you will need a Chrony.
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March 8, 2009, 12:47 AM | #3 |
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Divide the velocity by 1000 and square it, multiply that number by the bullet weight in grains, multiply that number by 2.219. This is the energy in foot pounds.
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March 8, 2009, 01:38 AM | #4 |
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KE = V Sq * w /450240
W = bullet weight in grains V= velocity KE would be your muzzle energy, This is the fomular showned in the Lvman reloading manuel and the fomular the army uses.
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Kraig Stuart CPT USAR Ret USAMU Sniper School Distinguished Rifle Badge 1071 |
March 8, 2009, 06:24 PM | #5 |
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Thanks. Which chrony would be recommended for new reloader on a budget?
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March 8, 2009, 08:01 PM | #6 |
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I Chrony brand chrony will cost you about $100 for a cheap one.
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March 9, 2009, 08:43 AM | #7 |
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Speer manual #11 has a table for calculating muzzle energy. I bet you could google the same info.
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