I have an old copy of information provided by Glock to Law Enforcement agencies reference the Glock's ability to safely fire +P+ and other ammo. With reference to acceptable ammo, it is not the same information as provided in the commercial owners manual. Glock indicated that the +P+ would not decrease the survice [sp] life of their pistol.
Can you post a copy of it, or type out what it says, along with the document name and publication date?
I've seen numerous 'Net posts that claim basically the same thing, but the actual document always seems to be in the hands of the poster's friend's cousin's auto mechanic's buddy who is a cop.
I'm beginning to think that these documents were written in ciphers by ancient Druids and are kept on engraved stone tablets in a perpetually locked vault at Glock HQ.