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Demystifying +P


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Old 03-21-2010, 03:55 AM   #11
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I have a quick question.Are there .40S&W+P loads?I have never heard of them or seen them,and if they are not made for whatever reason,what advantage is a .40S&W over a 9mm seeing as 9mm can be in +P and +P+ and has the same or more energy than a standard .40S&W?
The 40 S&W is a "modern" round. It was developed in conjunction with the current metallurgy incorporated in today's handguns. The rounds with +P and +P+ ratings are mostly 'old' turn of the last century cartridge designs. (45ACP, 9mm Luger, 38 spl......) The pressures were at a level that their contemporary firearms could handle. To prevent the new hot rod rounds from being used in these older (read: weaker) firearms, the +P was added.
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Old 03-21-2010, 11:03 AM   #12
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Old 03-21-2010, 03:13 PM   #13
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The 40 S&W is a "modern" round. It was developed in conjunction with the current metallurgy incorporated in today's handguns. The rounds with +P and +P+ ratings are mostly 'old' turn of the last century cartridge designs. (45ACP, 9mm Luger, 38 spl......) The pressures were at a level that their contemporary firearms could handle. To prevent the new hot rod rounds from being used in these older (read: weaker) firearms, the +P was added.
I see.So when I compare a .40 to the other major calibers,I should really be comparing a .40 to a 9mm+P and a .45 +P?A 9mm+P and .40 are somewhat comparable,but a .45+P is still the best?
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Old 03-21-2010, 04:04 PM   #14
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I see.So when I compare a .40 to the other major calibers,I should really be comparing a .40 to a 9mm+P and a .45 +P?A 9mm+P and .40 are somewhat comparable,but a .45+P is still the best?
Your analogy is accurate, but when you come to terms like best, know that they are subjective.
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Old 12-16-2010, 06:11 AM   #15
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There is no +P ammo in.380 that I've seen...ever...
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Old 12-16-2010, 07:27 AM   #16
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There is no +P ammo in.380 that I've seen...ever...
380 Auto +P Pistol & Handgun Ammunition
Demystifying +P - Ammunition & Reloading
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Old 12-16-2010, 06:13 PM   #17
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Now I've seen it...
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