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AR15.COM
10/17/2008 2:32:41 PM EDT
What does the +p and all that mean, please help repair my 9mm ignorance.
10/17/2008 2:59:01 PM EDT
[#1]
it means that it is of higher pressure than regular rounds.. It should only be used in modern firearms that can handle it..

Brian
10/17/2008 5:50:00 PM EDT
[#2]

Quoted:
it means that it is of higher pressure than regular rounds.. It should only be used in modern firearms that can handle it..

Brian



That's about all anyone could say.  *shrug*
10/17/2008 5:51:16 PM EDT
[#3]
Tell us what gun you are intending to use +P ammo in and we'll tell you whether or not to do it....
10/17/2008 5:53:23 PM EDT
[#4]
According to SAAMI specs, 9x19 MAP (maximum average pressure) for standard pressure 9mm loads is 35.0 kpsi.

For 9x19 +P loads, the MAP is 38.5 kpsi.

Although there are 9x19 loads marked +P+ that are commonly available, I do not believe that SAAMI has set forth or intends to establish a set MAP for that pressure rating and I'd be willing to bet that such loads typically operate in the 40.0+ kpsi range.


TK
10/17/2008 5:57:32 PM EDT
[#5]

Quoted:
it means that it is of higher pressure than regular rounds.. It should only be used in modern firearms that can handle it..

Brian


I thought +P meant "Proof", as in loaded to the same pressures as the high-pressure test cartridges used to eliminate firearms with defective, weak actions and barrels.  
10/18/2008 8:11:50 AM EDT
[#6]

Quoted:

Quoted:
it means that it is of higher pressure than regular rounds.. It should only be used in modern firearms that can handle it..

Brian


I thought +P meant "Proof", as in loaded to the same pressures as the high-pressure test cartridges used to eliminate firearms with defective, weak actions and barrels.  

No, that is not correct(if you are being serious).  NYPD uses 124+p Gold dots as their dept. issue load for their Glock 19s.  I don't think they are trying to blow up all of their guns, but I wouldn't put it past some of those Liberals.

FB
10/18/2008 8:21:28 AM EDT
[#7]

Quoted:

Quoted:

Quoted:
it means that it is of higher pressure than regular rounds.. It should only be used in modern firearms that can handle it..

Brian


I thought +P meant "Proof", as in loaded to the same pressures as the high-pressure test cartridges used to eliminate firearms with defective, weak actions and barrels.  

No, that is not correct(if you are being serious).  NYPD uses 124+p Gold dots as their dept. issue load for their Glock 19s.  I don't think they are trying to blow up all of their guns, but I wouldn't put it past some of those Liberals.

FB


I see, I was wrong.  Total mix-up on my part.  



standard-pressure 9mm=37,400psia
9mm+p= 38,500psia
9mm+P+=40,000 ???
9mm NATO=42,000-43,000psia (pounds per square inch, absolute)
9mm"proof loads"=49,800


www.thefiringline.com/forums/archive/index.php?t-99178.html