The manual says "Ruger LCR revolvers are designed for use with cartridges of the correct caliber which are manufactured in accordance with the U.S. Industry Standards". It does not specifically mention the +P version, and surprisingly does not mention SAAMI even though the +P version is SAAMI-spec. It does, however, say that the .38 Special version can use the +P version of that ammo. Take all that for what it's worth. I do find it strange that Ruger didn't mention the +P 9mm ammo. IMHO Ruger could have done a better job dealing with the +P 9mm ammo situation considering how popular that ammo is.
As an aside, the guy demonstrating the LCR9 in the video does say "you can shoot the same ammo in this evolver that you use in your autoloader". Again, take that for what it's worth.
And just for fun, whereas 9mm is rated @ 35,000 psi, the +P is rated @ 38,500 psi . . . and .357 is rated @ 35,000 psi with no SAAMI +P rating.
Ruger says it's OK to use .38 SPL+P in its revolver so marked, which is rated @ 20,000 psi.
I draw no conclusions from all this.
:mrgreen: