Originally posted by Masherbrum
Terror, again, the 9mm round is a worthless round. Why do you think the US is attempting to revert back to the .45acp? Actually, your Glock is NOT rated for +P+ ammo. But it's your gun, I'd look into a new barrel and spring.
Masherbrum:
You obviously have no first hand knowledge or experience in using Glocks.
Here is what my Glock's owner's manual says about ammo:
6. Ammunition Specifications for Glock Pistols
Glock pistols are designed to be fired with NATO or SAAMI specification ammunition. Therefore the following guidelines and specifications are provided so that proper ammunition will be selected for use in Glock pistols to assure proper functioning.
Any deviation from these specifications may lead to improper functioning and possibly void the warranty on Glock pistols.
Glock 9mm pistols will function properly with the new generation of 9x19mm ammunition including all +P+ and 147 grain subsonic ammunition currently in use or being introduced in the United States.
Minimum (lower limit) specifications for 9mm Ammunition to be used in Glock Pistols:
Bullet Weight 115 grains / 7.5 grams
Muzzle Velocity 1180 fps / 350 meters/sec
Maximum (upper limit) pressures for 9x19mm ammunition to be used in Glock pistols should not exceed 43,500 pounds per square inch/ 3000 BAR
You really do yourself a severe discredit, by making such obviously false statements. You are damaging your own credibility badly by doing this.
Here is a photo of my Glock 17. The only ammo that I ever shoot in it are the two Winchester +P+ Law Enforcement loads in the picture next to the gun. I have a dealer friend who sells this ammo to me at the really cheap Law Enforcement prices, even though he really is not supposed to even sell me the ammo period.

My gun still shoots and looks like new.
With Glock being the number one Law Enforcement pistol in the United States, it is absolutely ludicrous for you to claim that it is not able to shoot Law Enforcement level ammunition that is marketed specifically to police departments for use in such pistols.
SIG 220