Wayne, I've not; and in general find that replies based on no experience aren't very useful. BUT--here goes anyway-- 1) like others here i've shot lots of 255 cast bullets; 2) there are published data, e.g. Richard Lee, 2nd ed (with acc.#7, up to 898 fps); and 3) as long as they feed (and you keep pressure, i.e. velocity down--say 900 fps with a slow powder), go for it. One thing about Glocks is they will feed most everything, and they're pretty stout. Good luck, and be careful.
