It is rumored that Glock' s Hexagonal riflings cause severe leading buildups which are associated with Glocks going KaBoom. I have shot lead out of my Glock 30, while it was very accurate - it did lead heavily. However, I wasn' t using a high quality cast bullet like sothrdnk was.

I have a Colt MK IV Series 80 pistol that has seen some considerable modifications. I love it and I also love both my Glock 30 and Glock 21.