Meaning of 'Grain'

Discussion in 'M&P Forum' started by Cromo2014, Apr 30, 2014.

  1. Cromo2014

    Cromo2014 New Member

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    I'm a new shooter and when I purchase bullets I always see different types of grain. This could be a stupid question but does it mean the velocity of the bullet? How much powder the bullet has? I have a M&P40.


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  2. therewolf

    therewolf New Member

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    It specifically refers, in this instance, to the weight of the

    projectile, or bullet.

    Some standard weights for more common ammo which

    you will see on store shelves:

    9mm-115 or 124 grain

    .223 or 5.56- 50,55,62,69 & 75 grain

    45ACP-230 grain

    44 Rem Mag-240 & 300 grain

    30.06-- 150, 165,180 grain

    It is also used, in reloading, to measure the proper amount of

    gunpowder.

    In any event, to help satisfy your curiosity further, I

    can highly recommend any major manufacturer's

    reloading manual. Hornady, Speer, and Lyman come to mind

    as three excellent choices. Even if you never reload, it is a

    goldmine of information for the new shooter.

    BTW- 1 gram =@ 15.43236 grains.
     
    Last edited: Apr 30, 2014

  3. Gatoragn

    Gatoragn Active Member

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    7000 grains = 1 pound.

    Which is heavier, 7000 grains of lead or 7000 grains of feathers?
     
  4. Eagle1803

    Eagle1803 New Member

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    nice try Gatoragn:D
     
  5. therewolf

    therewolf New Member

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    7000 grains of supercalifragilistickexpialidocious. They proved it on

    Mythbusters. Ask Mary Poppins...:D
     
  6. therukh

    therukh New Member

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    Weight

    It is absolutely not a stupid question. The only stupid question is the one not asked! Therewolf & Gatoragn gave you spot-on, excellent information. I might add that I like to think of a typical 9mm, 115 grain bullet as weighing just a smidgeon over a quarter of an ounce. Kind'a gives a little point of reference. Your typical .40 S&W bullet is just over a third of an ounce & the vaunted .45 ACP 230 grain hardball bullet is just over a half ounce.
     
  7. roguejesse

    roguejesse New Member

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    Actually the feathers would be heavier on a scale.


    Jesse
     
  8. aandabooks

    aandabooks Active Member

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    Now that grains has been explained you'll want to consider that different grain bullets are going to move your point of impact and give you different recoil impulses. There is a lot of science that goes into the weight and shape of bullets.
     
  9. c3shooter

    c3shooter Administrator Staff Member

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    As said, typically it will address the weight of the bullet. But if you get into reloading ammo, it will also address the weight of the powder (separate number)

    Back in the day of black powder cartridges, like the 45-70, that was a .45 caliber fired by 70 grains of black powder.

    In shotshells you may also find an archaic measurement of drams. Also a measure of weight, it refers to the EQUIVALENT amount of black powder that particular shell would have been loaded with to equal the current smokeless load.
     
  10. sweeper22

    sweeper22 New Member

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    Grain = A unit of measurement with regard to weight.

    Beyond that, I'm probably ignorant as well. But I don't need to know more...because when it comes to units of measurement, things seem to fall cleanly into their respective place when comparing anything under the same unit scheme...regardless of whether you understand the finite details of said scheme.

    Maybe I should know more. But it's just unnecessary.
     
  11. Shoobee

    Shoobee New Member

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    It originally comes from a grain of wheat, anciently.

    It was originally used to measure gold and silver.

    It is a GREAT question !!!

    For me, the perfect bullet for hunting is the 200 grain boat tail solid copper hollow point.

    And for my 45ACP it is the 230 grain jacketed hollow point -- a big fat ideal 11.4 mm self defense round that you cannot beat.

    That's all you would ever need to know, unless you hunt in Africa, in which case the bullets get all the way up to 500 grains for elephant, rhino, hippo and water buffalo. Not to mention crocodile. But it is not safe to hunt crocodiles. Anywhere.

    In India, crocodiles hunt Indians -- the shoe is on the other foot.
     
    Last edited: May 1, 2014
  12. KG7IL

    KG7IL Well-Known Member

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    Now this is a whole other discussion on the Wood Working forum.

    But back to weight. Arrows and Gold Foil are among the items measured in grains.
     
  13. Axxe55

    Axxe55 The Apocalypse Is Coming.....

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    i'm always looking for a history lesson!:D