what does bullet grains mean?

Discussion in 'The Ammo Can' started by brandon14295, Dec 15, 2004.

  1. brandon14295

    brandon14295 XDTalk 100 Member

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    im such a newb when it comes to guns, so what does the number of grains mean on a bullet, and whats the difference between different ones?

     
  2. willbond

    willbond XDTalk 500 Member

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    It is the weight of the bullet in "grains". One grain is about 65 milligrams (I've heard, someone correct me if I'm wrong). :)
     
  3. Old School

    Old School Super Moderator Staff Member Supporting Vendor

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    Something to note. The heavier the bullet, the less recoil too. As an example 115g 9mm has more of a pop than 147g 9mm. This is why I plan to reload with 147g bullets.
     
  4. C.H.Luke

    C.H.Luke XDTalk 100 Member

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    Willbond is quite correct.

    1 grain equals 64.8 milligrams.

    "Grains" is a measure of weight. So is "Grams" but they are not the same. 1 gram = 15.4324 grains.

    1Lb. equals 7,000 grains.

    So in ounces a 230 gr. bullet weighs..... :shock:

    "An ancient unit which was originally based on the weight of a grain of wheat. The grain is the smallest unit of weight in the avoirdupois, troy, and apothecaries systems. Surprisingly it is identical in all three systems."
     
  5. DanaT

    DanaT XDTalk 100 Member

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    Old School,

    I beg to differ unless you mean a "dopwn loaded heavier bullet will have less recoil".

    Try going out with say a 357Mag. Fire a 125 grain bullet at 1400ft/sec. Now fire a 158gr at 1400ft/sec. I promise you will notice the 158gr a WHOLE lot more.

    Basically, felt recoil is a function of energy. Remember high scholl physics. For every action there is an equal and opposite reaction. I don;t care how you make 400ft/lbs of energy, it will have the same recoil (if fired in the same weapon, etc) as any other load with 400ft/lbs. Bump that to 600ft/lbs and you have 50% more recoil.

    Basically, the morepower, the larger the recoil.


    If you hypothesis were true, a 230gr 45 would kick less than a 147gr 9mm. Just not true.
    -Dana
     
  6. KoG

    KoG XDTalk 100 Member

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    I must agree with DanaT on that one as well. It's much easier to fire 300 Gr. .50AE bullets than 350+ Gr. bullets. Maybe there is a point where bullet weight takes on the opposite effect?
     
  7. ichy_trigger

    ichy_trigger XDTalk 10K Member

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    Grains in weight not to be confused with grains in volume as is the way black powder is messured[/quote]
     
  8. JimLongley

    JimLongley XDTalk 500 Member

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    .5257142oz, give or take... :shock:
     
  9. thirdtimesthecharm

    thirdtimesthecharm XDTalk 500 Member

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    phones ringing....hey jim its for you,..... its NASA
     
  10. skygun9

    skygun9 XDTalk 100 Member

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    It's simple, more grains=bigger entry wound, less grains=smaller entry wound.

    As for what happens after a larger heavier or smaller lighter round/bullet enters a body at a certain velocity, no one can say for absolute sure due to the amount of factors influencing the round's behaviour.

    If you want it dead for sure, use a big gun with a big bullet :wink:
     
  11. NExd

    NExd XDTalk 1K Member

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    smaller bullet = faster velocity
     
  12. C.H.Luke

    C.H.Luke XDTalk 100 Member

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    Isn't felt-recoil used generally as a subjective term?
     
  13. Old School

    Old School Super Moderator Staff Member Supporting Vendor

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    Felt recoil is certainly subjective. As for my comments, they may lack science.

    That said, all of the guys who I have spoken with about reloading 9mm suggest I load with a 147g bullet, because the heavier bullet helps reduce recoil. Is this true?
     
  14. C.H.Luke

    C.H.Luke XDTalk 100 Member

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    “.... suggest I load with a 147g bullet, because the heavier bullet helps reduce recoil. Is this true?"

    This type discussion usually revolves around meeting a particular Power-Factor. If so, you generally get noticeably lighter "felt" recoil with a heavier bullet at the same PF. {vel. x bullet wt. in gr.}

    In other words, a heavier bullet at lower velocity will have less "recoil" than a lighter one at a higher velocity, using the same powder while both satisfy the same relative PF level. This does not take into account that some powders, due to their burn rate and composition, lend themselves better to "soft" shooting loads in a given caliber &/or bullet weight than others.
     
  15. Old School

    Old School Super Moderator Staff Member Supporting Vendor

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    This is great information. Thanks!

     

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