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AR15.COM
1/1/2006 2:34:00 PM EDT
I have a .357b magnum Ruger GP100 and it shoots .357 mag .38 spl+P,.38 Special +P+ and the regular .38 spl round. What does the +p and the +P+ mean?
1/1/2006 5:34:51 PM EDT
[#1]
This seems to cover it:  www.frfrogspad.com/miscellk.htm
1/1/2006 7:30:14 PM EDT
[#2]

As far as 9mm is concerned, +p+ is basically ammo loaded to ridiculously accepted levels,

and gets you more velocity.