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Post by livnhel on Oct 5, 2004 23:20:06 GMT -5
Is there realy that much of a bump up in the .40mm from the 9mm? Thanks
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Post by MLB on Oct 6, 2004 9:36:25 GMT -5
To oversimplify the situation, the .40cal is just a somewhat heavier 9mm bullet (same diameter) with a bit more powder, and therefore a bit more energy. There's a good comparison at this site www.chuckhawks.com/handgun_power_chart.htm. edit: Oops, see clarification below... |
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Post by TMan on Oct 6, 2004 11:44:45 GMT -5
To oversimplify the situation, the .40cal is just a somewhat heavier 9mm bullet (same diameter) with a bit more powder, and therefore a bit more energy. MLB, I don't think they are the same diameter. A 9mm is .356 in diameter and the .40 S&W is .40 in. The 9mm case is .754 and the .40 S&W is .850. So the longer case means a capability of more powder. I know certain undercover federal agents are now carrying the .40 S&W. |
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Post by Callahan on Oct 6, 2004 14:16:10 GMT -5
Isn't the .40 S&W a 10mm short? ;D
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Post by Callahan on Oct 6, 2004 14:18:02 GMT -5
Maybe the confusion is with the 357 Sig.
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Post by Ricochet on Oct 6, 2004 14:26:54 GMT -5
As already stated, a slightly heavier slug, a slightly larger diameter, and a little more energy = statistically better chance of a one shot stop with the .40 cal. But the difference is really pretty small and you can get some pretty hot/effective 9mm ammo too.
While I think you can be just as effective with a 9mm, the .40S&W does seem to be gaining popularity and being picked up by more LEO organizations.
Some would rather have the 9mm with more rounds in the magazine. It seems to me the real determining factor in stopping power would be shot placement. ;D I have both calibers.
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Post by MLB on Oct 6, 2004 15:09:25 GMT -5
Sorry about that guys. Brain was not functioning all that well this morning. It's the .380 auto that I was thinking of, it has a 9mm bullet. The .40cal and 10mm are similar (same?) It's good to have a few heads in the game eh?  |
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Post by Callahan on Oct 6, 2004 16:25:17 GMT -5
Yep. 10mm sure sounds like a significant step up from 9mm, doesn't it?
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Post by "DoubleAction" on Oct 6, 2004 16:28:03 GMT -5
The diameter of the 9mm is .355 inches, the .40 is .40 inches, Making the .40 the larger diameter of the two bullets, providing for a wider wound cavity , with velosities in the .40, for a 165 gr. hollow point reaching 1100 fps, with 443 ft. lbs. of energy. The 135 gr. Corbon HP, in the .40, claims to be 1300 fps. The .40 can be converted to the 357 sig in some pistols, which will give an equivilant to the diameter of the 9mm, .355", with velosities of over 1400 fps, in a 125 gr. HP.
The police departments, like those in my nearby Atlanta, are switching over to the .40 S&W for more stopping power. Shot placement will always be up for grabs in an arguement, as will magazine capacities, recoil, and support for certain manufactured bullet designs for the 9mm.
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