Check your owner's manual or call Glock.
Yes
It depends on what cartridges you are comparing. Some 9mm is. Also, 9mm is also availabe in Plus P.
The "P" as in +P or +P+ indicates a higher velocity load. Not all guns can handle this.
None. Actually, if you mean "+P" the plus P indicates more powder in the casing, therefore more velocity and more muzzle energy.
You must call Browning for the answer.
You will need to check the owner's manual or find a gunsmith
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.
Follow recommendations in the owner's manual
no
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 it is. A steady diet of plus P ammunition decreases the service life however