and also dont get any ammo with a lead bullet. glocks dont like lead bullets, in case you didnt know. as for me im just buying what i can and seeing what ammo my g23 gen 4 likes, and what i like to shoot. so far i have tried magtech, american eagle and im about to try out the winchester white box from wal-mart. i liked the magtech ammo, didnt really like the american eagle ammo. i would just say go out and try different ammo to see what you and your glock like.