If you are referring to the 33 round double stack magazine - I know it will fit the Ruger P-89. If the P-89 mag fits the P-85 your answer is YES.
You will need to contact Ruger.
From the Ruger website: What type of ammunition should I use in my Ruger 9mm pistol? The Ruger 9mm pistols are chambered for the 9x19mm NATO Parabellum (9mm Luger) cartridge, compatible with the U.S. and foreign military or commercial 9x19mm loads manufactured in accordance with NATO, U.S., SAAMI, or CIP standards, including high-velocity, subsonic, tracer, hollow point, ammunition loaded in aluminum, steel, or brass cartridge cases, +P and +P+ ammunition.
From the Ruger website: What type of ammunition should I use in my Ruger 9mm pistol? The Ruger 9mm pistols are chambered for the 9x19mm NATO Parabellum (9mm Luger) cartridge, compatible with the U.S. and foreign military or commercial 9x19mm loads manufactured in accordance with NATO, U.S., SAAMI, or CIP standards, including high-velocity, subsonic, tracer, hollow point, ammunition loaded in aluminum, steel, or brass cartridge cases, +P and +P+ ammunition.
Yes per conversation with Springfield Inc. it is safe to use +p or +p+ FACTORY ammunition, but it can accelerate wear on the weapon at a higher rate.
Yes ,the Springfield XD 45 is rated for +P ammo. I carry CorbOn 200gr +P 's in mine. G
+P ammunition differs only in having more powder - the cartridge dimensions remain the same. Most Colt products are capable of handling +P ammunition, and even +P+ - however, you should contact customer service with the model and serial number of your firearm to get confirmation directly from the company that your pistol is rated to withstand the additional pressure generated by +P ammunition.
Yes it is. A steady diet of plus P ammunition decreases the service life however
All production models of the Mod 36 and Mod 37 manufactured in 1998 or later are rated for +P ammunition. Prior to that date, no guarantees.
No. This was made long before +P ammo was created.
A pistol rated to fire .38 +P ammunition is still going to be a .38 Special pistol, and can use regular .38 Special ammunition. .357 Magnum revolvers are also capable of chambering and firing .38 Special loads - regular, +P, and +P+ included.
Zero. Ruger never made the P38.