this probably won't help you but in my competition frame 9x21 everything works OK, except I can't load any longer than 1.17 otherwise I get feeding problems in the mag. The competition frame is based off of the older small frames, much like a typical CZ-75. I do know the 'smith at EAA told me for mine it prefers 130 gr 9mm bullets. I've purchased some but have yet to load em up.