I'll chime in since I recently started reloading 9mm on my 650, however I'm BRAND new to loading pistol calibers so take this as newbie info... So if your an experienced loader for 9mm, just ignore me lol.
I found a similar issue, the flare from the powder die as set per the manual was no where near enough for the Strella 124gr (9.00mm almost exactly) I was using. I had to flare the casing more to get it to fit and then of course I end up with the infamous "coke bottle" reloaded 9mm rounds. Everyone told me "this is normal", test feed, worked fine (without primers) so took to the range and sure enough, worked fine.
Cheers
Tim