what are bullet tips?
using lead in factory Glock barrels is simply inviting trouble. sure you might have thousands of rounds through yours, but I also know of 10 Glocks personally that have gone KB from using supposed hard cast lead bullets, and were being cleaned after every shooting. There is a reason Glocks states not to use lead in your factory barrels and to counsel someone to repeat your mistake is criminal in my mind. standard jacketed bullets are no problem however just make sure you know what you are doing.