guys i have a question... is it possible to damage the rifling of the barrel when you use a Steel bore brush on Glocks? 1st time ko kasi gumamit ng Lead Bullets, before i use FMJ reloads. Sobra dumi nung ginamitan ko ng Lead, hindi kaya ng Nylon bore brush so gumamit ako ng Steel but after that may napansin akong scratches on one section inside the barrel... Kala ko tinga tinga lang so i decided to brush it again pero di pa din natanggal. Gumamit na din ako ng Bore snake nalinis naman but the scratches is still there. What do you think guys? Did i damage the rifling or it's just a hard tough Lead Tinga? hindi ko naman pinwersa ang paglilinis... It's my first gun that's why i'm a little worry. Any experience similar to this case? will the scratches affect the performance of my pistol? Thanks in advance guys! your comments are deeply appreciated!