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Do higher pressures equal....

Discussion in 'Shooting Related Threads' started by DaveXT, Oct 10, 2012.

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  1. DaveXT

    DaveXT Member

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    According the printed data, using different wads changes pressure levels even while the powder charge remains the same. Do higher pressure levels create more felt recoil?

    Dave
     
  2. crusha

    crusha TS Member

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    The law of conservation of momentum has never been repealed.


    For a given projectile, Velocity is what matters. Forget pressure.
     
  3. halfmile

    halfmile Well-Known Member

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    The weight of the shot charge is the biggest contributor to felt recoil.

    That said, Some of the black Wally World Hyper one ounce loads really drill you. Of course they are at about 1350 or so.

    Newton rules.

    HM
     
  4. Recoil Sissy

    Recoil Sissy Well-Known Member

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    Hi Dave:

    FWIW, the question you posed is asked pretty regularly. I'll bet the interest charges associated with financing a new high dollar target gun (that's a reference to another thread) that someone will be along shortly to argue higher chamber pressures do indeed, increase felt recoil.

    Actually, it's a sure bet. These well intentioned but misinformed individuals show up every time 'your' question is asked. So check your watch now and see how long it takes for one of them to post.

    sissy
     
  5. GW22

    GW22 Active Member

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    Careful Buzz, it might not be that simple. Exactly where are you taking that velocity measurement? Maybe you should be taking it at several different places INSIDE the barrel. I hear what you're saying about velocity, but consider ACCELERATION as the payload goes down the pipe.

    -Gary
     
  6. wayneo

    wayneo Active Member

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    Oh no.........

    Wayne
     
  7. GW22

    GW22 Active Member

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    I know. I know.

    -Gary
     
  8. dverna

    dverna Active Member

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    I reallly depends on the type of powder you use. A "slower" powder will always give less felt recoil than a "faster" powder.

    There are some jerks who quote Newton but that apple was accelerated by gravity not powder. I know these 'science' types are full of it because a lot of the old farts I shoot with have proven that recoil is affected by powder burn rate through years of use.

    I was really dumb and bought all the science BS. I wound up buying 6 damn cases of Promo that will last a long time. I cannot wait to convert to Green Dot or Universal Clays so I can get higher velocity with lower recoil.

    I also have some soon to be waterfront property in Nevada.

    God my mentor was right. Knowledge is power!!

    Don Vern
     
  9. Setterman

    Setterman Well-Known Member

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    I agree Don and GW!
     
  10. Setterman

    Setterman Well-Known Member

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    Shoot a 1200 fps load with Red Dot for 1/2 the summer, and the switch to Green Dot and come back to this discussion!
     
  11. tbobaa

    tbobaa Member

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    recoil energy in ft. lbs. equals (BW times mv +4700 times pw)2 divided by 64.348 times gw.bw is weight of shot and wad in pounds.mv is muzzle velocity in feet per second.pw is powder weight in pounds.a ounce an eight of shot and wad will be about .075 pound for powder weight take grains divided by 7000 that will give you weight in pounds for powder.As you can see nothing in this equation has any thing to do with pressure.gw is gun weight
     
  12. hmb

    hmb Well-Known Member

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    There is a relationship between pressure and recoil. When there is no pressure there is no recoil. When there is a lot of pressure you have recoil. HMB
     
  13. shot410ga

    shot410ga Well-Known Member

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    HMB, good point.
     
  14. 1oldtimer

    1oldtimer TS Member

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    If it speeds up the load,recoil will increase. CED
     
  15. Jawhawker

    Jawhawker TS Member

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    With all else being equal, don't some wads weigh more and wouldn't that have an effect on felt recoil?
     
  16. Calkidd

    Calkidd Well-Known Member

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    Has nothing to do with pressure. The reason some different powders have the perception of lower recoil is due to the measured recoil curve. The actual final measurement of recoil will be the same regardless of the powder you use just as long as the payload and velocity are the same.

    Think of it as a sine wave. You're Red/Promo would be a short rapid curve with Green Dot being a longer curve. The height of the curve or measured Ft/Lbs of recoil in both powders are the same, it is the time it take to get there that gives you the perception of more or less recoil.

    Bryan
     
  17. Chichay

    Chichay TS Supporters TS Supporters

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    Flincher 100,

    Nonsense! Show us how, inside a gun barrel, it is possible to have a lot of pressure without ejecta movement (velocity).

    Chichay
     
  18. jim brown

    jim brown Well-Known Member

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    Chick, plug both ends and hook it up to an air compressor. Pressure, no recoil.


    jim brown
     
  19. spitter

    spitter Well-Known Member TS Supporters

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    [​IMG]


    From a recent Hodgdon Reloading guide...

    Jay
     
  20. halfmile

    halfmile Well-Known Member

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    If you make a mistake and load a spent primer, you will get reverse recoil as the hammer drives the gun forward.

    HM
     
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