Have you checked for setback? I only use
Montana Gold 357 Sig bullets. You need to make sure your use bullets that provide maximum neck tension. It isn't as much the tip of the bullet but instead is the ogive of the bullet ends before the portion of the bullet inside the case. Probably more 9mm bullets will not work, than will.
As far as the no bell die, I don't bell my cases at all. I just need to be careful about how I start the bullet into the case. The neck is short enough that any bell will seriously reduce available neck tension. And flaring and crimping will not recover the same amount of neck tension. I set up my sizing dies to headspace off the shoulder, so I have a minimum of case neck to work with.
Accurate No. 9 is a very popular powder for the 357 Sig. Hotter loads are compressed so the powder can be used to help provide support to minimize setback.