having problems with loading 9mm

[gwpercle]

I was having a few problems with the 9mm and 8 bhn cast boolits also ...but
the answer was a NOE boolit mould , #358-124-TC GC , sized to .357" , lubed with soft Lithi-Bee lubricant , with a gas check attached and then the thing that helped the most ... expand the case mouth with the correct sized NOE Expander Plug , the ones with the correctly sized M-Die Expander profile ... and ( Voila' )...Wah Lah ...
Problems solved ... I honestly believe the gas check does a good job in the Pesky 9mm , if you wish to use softish boolits ... drive em fast and the soft slugs mushroom ... the GC protects the boolit base / barrel from leading .
Gary

[Abenaki]

Guys, thanks for all of your replies. I do appreciate them!

I have been thinking things over. And took a long hard look at how I was loading the 9mm.

I am using a expander plug from NOE. I love it.

I have been using Carnuba Red for lube..... I'm gonna change that to a softer lube. Maybe a some old 50/50 that I have.

While I was seating and crimping in two different steps. I hate to admit it but I was over crimping.
I pulled a boolet and could see a groove in the boolet. And a slight bulge in front of the groove. That maybe part of the problem.

I did back off of the seating die, to make sure it was not trying to crimp it while seating the boolet.

I made a new dummy round with a real light crimp. I get no set back when I put a lot of pressure on it by pushing it against the table.
And no set back when I chamberd it a couple of times.

I will load up some new rounds maybe tomarow and see what happens.

Thanks for all of your help
Abenaki

[mehavey]

dummy round with a real light crimp....

No 'crimp' req'd
Just de-flare to 379/380

using an expander plug from NOE.

'M'die like ?
and can you easily hand pre-seat a nickel's worth ?

maybe tomrrow and see what happens.

Don't keep us in suspense !!

[Abenaki]

No 'crimp' req'd
Just de-flare to 379/380

'M'die like ?
and can you easily hand pre-seat a nickel's worth ?


Don't keep us in suspense !!

Yes like a "M" die, and I can pre-seat it by hand.

Abenaki

[243winxb]

RCBS 9mm die set comes with an M expander. https://www.thehighroad.org/index.ph...9mm-luger.317/

[ACC]

Your cases maybe a tiny bit short. I have had this problem in my model 59 one time when I trimmed my cases a bit short.

ACC