dmac said:
Thanks for the replys. Do I understand correctly that some just use rcbs dies without doing anything else. Will be using them in 1911
I have loaded tens of thousands of 9mm with a set of Lee carbide dies. A lot of my range brass is from Glocks with the distinctive square primer mark. The "glocked" brass idea is more hype than reality in my experience, and if it ever exists is far more likely to happen in .40 rather than 9mm or 45 ACP. Personally I have only seen it in 357 sig brass. My solution to that was to put the damaged brass into the scrap bucket.
If you really want to know if you will have a problem, get a chambering gage. EGW makes a nice one that covers four cartridges. http://www.egwguns.com/index.php?p=product&id=843
For $20 you will know if you have a problem.