Which collet do I need ?

[bhuch5]

I am using a modified Forster hollowpointer on my old RCBS case trimmer to HP lead bullets. I do not know which collet to use for 9mm luger rounds. My chart says collet #2 but it is too small. #1 doesn't work for me either. I guess my question is which collet do you use for your 9mm rounds?
Thanks, Bruce H