I just loaded my first loads of 9mm. the bullets seated with very little effort on my part. Should I be using a crimp die after seating???

Yes. Taper crimp if you're shooting in an auto. Your seating die may be capable, but many prefer a separate crimping die.

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I just loaded my first loads of 9mm. the bullets seated with very little effort on my part. Should I be using a crimp die after seating???

You didn't specify which 9mm. I think of 9mm pistol when I see that and you don't want to be crimping on a case mouth headspacing cartridge like a 9mm pistol. Not roll crimping anyway! I have never crimped a pistol case and have never had a bullet moving. Mind you, I have never crimped a rifle case either. 44 mag was different - no choice!

Yes, it is for 9mm Auto.

I don't crimp 9mm. I use the crimp die to get rid of the bell that the powder/expander die put in.
Rusty

You want to use a taper crimp and as noted apply just enough to remove the bell from the case mouth.

Yes. What everyone else said.

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I use the crimp die to get rid of the bell that the powder/expander die put in.

Aah... yes, now I remember! (Was it that long ago?!)

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Originally posted by RustyFN:
I don't crimp 9mm. I use the crimp die to get rid of the bell that the powder/expander die put in.
Rusty

That is taper crimping the round. For 100% reliability, taper crimp your pistol ammo, always.

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That is taper crimping the round.

I'm confused now (nothing new). I will never be reloading for a pistol again but ... I always thought 'taper crimping' squeezed the case mouth into the bullet (which would cause a problem with headspacing on the mouth). No doubt about 'roll crimping'. What about 'taper crimping' a rifle cartridge with jacketed bullets?