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9 Micky Mouse
Starting Member
USA
40 Posts |
 Posted - October 21 2009 : 8:47:48 PM
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I just finished an advanced pistol class. One of the subjects was on bullet stopping power. I must admitt I am really tired of the 9mm vs 45 thing carry what you want and keep it moving.
However, the instructor said that the same recoil felt from the weapon is the same impact that the perp would feel.
Is this true. |
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Evan
Administrator
27510 Posts |
Posted - October 21 2009 : 9:09:43 PM
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| NO-one is foot lbs of recoil and the other is cutting&tearing issue and putting in holes in things that will cause blood loss. |
"The greatest thing a Father can do for his children is to love their Mother."
Harold B. Lee
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enidpd804
Advanced Member
1168 Posts |
Posted - October 21 2009 : 9:17:16 PM
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| I'm sorry, MM. That's inane. Just one small factor of this complicated topic: What if the bullet over-penetrates? Some of that energy is spent downrange. That instructor over simplified that subject, for certain. |
Warren |
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Arvinator
Advanced Member
USA
1809 Posts |
Posted - October 21 2009 : 9:30:51 PM
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| Not to insult others, just toooo many armchair commandos who want to sell you stuff, or blow smoke your way. |
Be honest, fair, and always prepared... |
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Luke68
Starting Member
USA
35 Posts |
Posted - October 21 2009 : 9:38:46 PM
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The instructor was correct in the sense recoil is explained using Newton’s 2nd law concerning conservation of momentum (mass of firearm x velocity of the firearm = mass of the projectile x velocity of the projectile). This equation explains forces while the bullet is still in the barrel.
However, he didn’t understand the second half of Newton’s 2nd law. Kinetic energy is defined as ½ the mass of the projectile multiplied by projectile velocity squared. This energy is the work that the projectile can do after the bullet leaves the barrel measured in foot pounds.
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Therefore...let us resist evil, and whatsoever evil we cannot resist with our words, such as rebellions and dissensions, let us resist them with our swords, that we may retain our freedom. -Pahoran 62 BC |
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Lockjaw
New Member
USA
99 Posts |
Posted - October 22 2009 : 12:28:18 PM
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I guess using that logic it would be better to shoot the perp with the biggest handgun out there, what it it, the 500 S&W?
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Jim Higginbotham
Moderator
USA
6228 Posts |
Posted - October 25 2009 : 6:02:59 PM
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quote:
Originally posted by 9 Micky Mouse
I just finished an advanced pistol class. One of the subjects was on bullet stopping power. I must admitt I am really tired of the 9mm vs 45 thing carry what you want and keep it moving.
However, the instructor said that the same recoil felt from the weapon is the same impact that the perp would feel.
Is this true.
I probably should not venture into this but I suspect the instructor might have been saying that you cannot expect to bowl people over with the force available in a handgun bullet since the "equal and opposite reaction" we know will be there would bowl the shooter over.
One should not take it to mean much else. Evan pointed out above how the bullet works. I dont doubt your instructor was telling you not to expcet "the Hammer of Thor" - if that is the case, he is right.
Again, I have no way of knowing exactly what he was trying to get across.
Jim |
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Jim Higginbotham
Moderator
USA
6228 Posts |
Posted - October 25 2009 : 6:05:41 PM
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quote:
Originally posted by Luke68
The instructor was correct in the sense recoil is explained using Newton’s 2nd law concerning conservation of momentum (mass of firearm x velocity of the firearm = mass of the projectile x velocity of the projectile). This equation explains forces while the bullet is still in the barrel.
However, he didn’t understand the second half of Newton’s 2nd law. Kinetic energy is defined as ½ the mass of the projectile multiplied by projectile velocity squared. This energy is the work that the projectile can do after the bullet leaves the barrel measured in foot pounds.
OTOH, he may have been enlightened enough to know that kinetic energy has no *causal* relationship with incapactitating people. There may be some coincidental relationship but the thing about coincidenetal relationships is that we cannot count on them.
Every year the cracks in the sidewalks get bigger about the same season that crime increases in big cities.
That does not mean that wider sidewalk cracks cause crime 
Jim H. |
Edited by - Jim Higginbotham on October 25 2009 6:07:24 PM |
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Evan
Administrator
27510 Posts |
Posted - October 25 2009 : 6:22:44 PM
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| No, but they can break your Mother's back. |
"The greatest thing a Father can do for his children is to love their Mother."
Harold B. Lee
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Lockjaw
New Member
USA
99 Posts |
Posted - October 26 2009 : 07:27:45 AM
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I still try not to step on them too.  |
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Evan
Administrator
27510 Posts |
Posted - October 26 2009 : 09:04:43 AM
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We all know cops cause crimes-if they weren't there to take the report we would be crime free.  |
"The greatest thing a Father can do for his children is to love their Mother."
Harold B. Lee
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Jim Higginbotham
Moderator
USA
6228 Posts |
Posted - October 29 2009 : 8:55:04 PM
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quote:
Originally posted by Evan
We all know cops cause crimes-if they weren't there to take the report we would be crime free.
I forgot myself for a moment there.
Cops and guns cause crime.....
....and combs cause hair
Jim |
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Russ Larges
Moderator
USA
1692 Posts |
Posted - October 30 2009 : 07:31:08 AM
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I need a new comb!!!!!!!!!!
Russ |
The pistol, learn it well, carry it allways. Jeff Cooper |
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Greg
New Member
95 Posts |
Posted - October 30 2009 : 5:42:42 PM
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| I need a lot of combs. |
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Nobby42d
Average Member
USA
334 Posts |
Posted - October 31 2009 : 03:47:20 AM
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quote:
Originally posted by Greg
I need a lot of combs.
I'd settle for hair.
Ok, sorry. Dang Red Bull again. |
We've got 'em now boys! George A. Custer, June 25th,1876--Little Bighorn, Mont. |
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Topic |
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Bullet Impact
