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Need help computing muzzle energy

Discussion in 'Shooting Related Threads' started by omgb, Dec 30, 2011.

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  1. omgb

    omgb Well-Known Member

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    If I have an 850 grain slug going 1250 fps 6 feed from the muzzle, how much energy is that exibiting?
     
  2. folothru

    folothru Member

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    simple math = physics
    850 x feed x angle of the dangle == LOSS WHAT IS FEED ??
     
  3. chipking

    chipking TS Member

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    2964.56 ft-lbs

    That's gonna leave a mark!!

    --- Chip King ---
     
  4. omgb

    omgb Well-Known Member

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    It did, that was my range results from my 12 bore rifle. It killed on both ends. 9 rounds and I was ready for the 3006...I can only take so much abuse.
     
  5. Barry C. Roach

    Barry C. Roach Well-Known Member

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    Oh Jesus, here comes Neil.
     
  6. chipking

    chipking TS Member

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    omgb according to my quick calculations that is around 52 ft-lbs of recoil energy compared to 13 ft-lbs for your 30-06 150gr in the same weight gun. That's somewhere just north of brutal.

    --- Chip King ---
     
  7. Barry

    Barry Member

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    The formula for calculating energy is: velocity (fps) X velocity X weight (in grains) / divided by 450240 = muzzle energy in foot pounds
     
  8. omgb

    omgb Well-Known Member

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    I think I would like a smokeless load for this gun. The recoil is brutal. The gun weighs in around 9 lbs. The 150s grains of powder ads to the 850 grain slug. Honestly, shooting off hand and leaning well into the shot, it would consistantly pick my left foot off the ground and I'm 6'3" and weigh 315 lbs. I've shot a heavy double rifle once but it was nothing like this. I can't imagine what an 8 bore or even a 4 bore must be like.
     
  9. g7777777

    g7777777 TS Supporters TS Supporters

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    Mass times Velocity(squared) for energy

    Mass times Velocity for Momentum (Recoil)




    Regards from Iowa

    Gene
     
  10. School Teacher

    School Teacher Well-Known Member

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  11. omgb

    omgb Well-Known Member

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    That's the one
     
  12. BigM-Perazzi

    BigM-Perazzi Well-Known Member

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    Did it take down the T-Rex?
     
  13. omgb

    omgb Well-Known Member

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    I believe it could. If the bullet were a solid. Recovered bullets show a lot of deformation in dirt. I would imagine that it would be tough to get a lead alloy slug to go through an elephant's skull. Taylor used a 7x57 sometimes but he and Bell and others said that when using BP doubles, they prefered an 8 or a 4 bore to ensure full penetration. All I can tell you is that it goes through 1/4" mild steel plate at 50 yards but won't at 100. So, maybe if I got an elephant up at 20 yards or so I could drive one of these through it's skull. Based on it's energy and it's KO rating, I imagine a direct hit between the eyes on a cape buff would give him cause to set down and ponder for a moment or so. I'm certain that it would stop a charging Grizz with a proper hit.
     
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