How to set crimp on Hornady 9mm dies

Coach Z · January 29, 2014, 06:35 PM

So I'm getting ready to reload my first batch ever. Going to do 100 rounds of 9mm using new Rem brass. Going through the instructions with the die it says to adjust the die down until you get the desired crimp....problem is I don't know how much I want.

I tried a few for practice and then pulled them and a few as I went further down showed a ring in the bullet when I pulled them where the case had been sort of swaged onto the bullet. How much is enough??? Thanks for the help

Brian Pfleuger · January 29, 2014, 07:15 PM

You're only trying to remove the flare you put in the case. No more, no less.

LE-28 · January 29, 2014, 07:22 PM

I only taper crimp my 9mms enough to straighten out the flare from the flaring die. Any more than that is not necessary. Neck tension from the case is what holds a 9mm bullet in place not the taper crimp.

If you taper crimp to much you will shrink the diameter of the bullet and it will become loose in the case. The case will spring back a .001"or so but the bullet will not. Once the diameter of the bullet has been reduced by the taper crimp die the bullet will stay that way and possibly set back from recoil.

Once you set it to just straighten out the flare on all your cases, the variances of the length of cases won't matter because the flaring die is affected by different lengths of the cases exactly the same way the taper crimp die is. So everything comes out even.

YARDDOG(1) · January 29, 2014, 07:27 PM

The above advice is great,,,Though I would only load 10=15 rounds max unless already tested

JMO
Y/D

Coach Z · January 29, 2014, 07:42 PM

Thanks for the replies guys, I'm goin in!

Nick_C_S · January 29, 2014, 07:46 PM

Quote:

I would only load 10=15 rounds max

^^ Agree ^^

Patience is very important when you first get started - well, it is always as a loader; just more so at the beginning.

January 29, 2014, 06:35 PM	#1
Coach Z Senior Member Join Date: February 18, 2011 Location: RI Posts: 795	How to set crimp on Hornady 9mm dies So I'm getting ready to reload my first batch ever. Going to do 100 rounds of 9mm using new Rem brass. Going through the instructions with the die it says to adjust the die down until you get the desired crimp....problem is I don't know how much I want. I tried a few for practice and then pulled them and a few as I went further down showed a ring in the bullet when I pulled them where the case had been sort of swaged onto the bullet. How much is enough??? Thanks for the help __________________ Love my guns

January 29, 2014, 07:15 PM	#2
Brian Pfleuger Moderator Emeritus Join Date: June 25, 2008 Location: Austin, CO Posts: 19,578	You're only trying to remove the flare you put in the case. No more, no less. __________________ Nobody plans to screw up their lives... ...they just don't plan not to. -Andy Stanley

January 29, 2014, 07:27 PM	#4
YARDDOG(1) Senior Member Join Date: October 24, 2008 Location: GATOR COUNTRY HA HA HA! Posts: 721	The above advice is great,,,Though I would only load 10=15 rounds max unless already tested JMO Y/D __________________ There's a GATOR in the bushes & She's Callin my name >Molly Hatchett<

January 29, 2014, 07:42 PM	#5
Coach Z Senior Member Join Date: February 18, 2011 Location: RI Posts: 795	Thanks for the replies guys, I'm goin in! __________________ Love my guns

January 29, 2014, 07:22 PM	#3
LE-28 Senior Member Join Date: September 24, 2012 Location: North Carolina Posts: 759	I only taper crimp my 9mms enough to straighten out the flare from the flaring die. Any more than that is not necessary. Neck tension from the case is what holds a 9mm bullet in place not the taper crimp. If you taper crimp to much you will shrink the diameter of the bullet and it will become loose in the case. The case will spring back a .001"or so but the bullet will not. Once the diameter of the bullet has been reduced by the taper crimp die the bullet will stay that way and possibly set back from recoil. Once you set it to just straighten out the flare on all your cases, the variances of the length of cases won't matter because the flaring die is affected by different lengths of the cases exactly the same way the taper crimp die is. So everything comes out even.