Originally Posted By: john_pifer
Originally Posted By: bubbatime
I've owned about 40-50 Glocks in my lifetime, and have shot at least 100K rounds, maybe 200K rounds through them. I like to think that I have extensive knowledge of this subject.
3) Glock pistols were designed in Austria to use European spec ammo. American spec ammo is not as powerful as European spec ammo. People break their $500 Glock pistols in with garbage ammo and then complain when the pistol doesn't function as expected. Try and find a nice hot Italian made Fiocchi or 9MM NATO round to shoot for the first 200 rounds. (9MM NATO is loaded similarly to a 124+p)
What difference would it make as far as break-in of a pistol for the first 200 rds to be hotter loads?
Based on what I have seen, new Glocks are over sprung, recoil spring wise, for typical made in America FMJ when new. The springs rapidly settle it after about 200-500 rounds and will function better with light loads. It's a personal preference of mine to shoot 9mm NATO or 124+p through these guns for at least the first 200 rounds.
Also, lots and lots of reports of guys on Glocktalk with problems while breaking in their new Glock (brass to face, erratic extraction, not loading next round, etc) . I am confident that they would have had zero problems had they followed my advice and shot some hot ammo for the first 200 rounds.
This advice really applies to any new pistol, really, not just Glocks.