9mm Case Guage Rejects!

[MtnCreek]

I'm having trouble with some 9mm reloads. Approximately 15% of my 9mm reloads will not pass a case guage test (famous Glock fired brass).

Loading on Dillon 650 w/ Dillon dies. Just for kicks, I also tried sizing 25 rds on a RCBS press w/ Lee die. Same results either way. First 100 rds loaded had a 12% failure to pass a Wilson case guage. I checked everything out, then loaded 100 more rds. 18% of these also failed the Wilson guage. The brass has a slight bulge just above the head. It's located in a area that is just below the portion of the case that's sized. After examining my Glock pistol, I know why the bulge is there.

How do I load once fired (Glock) brass so that it will pass a case guage test?

Thanks!

 

[rcmodel]

Get a bigger case guage??

Seriously, I would use the barrel out of the Glock itself for the guage.

If they will drop freely into the chamber and fall back out, that's all you need them to do, right?

rc

 

[RhinoDefense]

Be sure your sizing die is all the way to the shellplate.

 

[Walkalong]

They will still fit most chambers. I have an EMP with a tight chamber, so I gauge all my sized 9MM brass. If it fails the gauge I scrap it. Those same cases (unless seriously bulged from overloads) will chamber in all my other 9MM's, but since I can't guarantee it won't be fired in the EMP, I scrap them. It's about 10% failure rate with range brass.

 

[Walkalong]

Be sure your sizing die is all the way to the shellplate.

Excellent point since the 9MM case is tapered.

 

[CHALK22]

I believe that Lee makes thier "bulge buster" for this exact reason. Although they don't make it for the 9mm. Striaght wall cases only I believe.

http://www.leeprecision.com/cgi/catalog/browse.cgi?1292249961.4069=/html/catalog/bulgebuster.html

 

[RhinoDefense]

Those types of dies are a replacement for proper knowledge and skill. They are making money off people not willing to spend the time to learn the proper methods of ammunition loading. If you set your dies correctly, you will not need gimmick dies such as the Lee "bulge buster".

 

[Walkalong]

For me, if the sizer cannot get the brass to fit the gauge, it has been stressed more than I want to fool with. Too much cheap/free 9MM brass out there.

 

[MtnCreek]

How do I set the die correctly? Die contacts shell plate on stroke. I even overcammed just enough to remove the slack in the shell holder system.

 

[rbernie]

The Lee FCD will remove the bulge and I have used it on 40S&W brass for this reason.

 

[RhinoDefense]

My sizing dies work very well at this, just like they were intended to do.

 

[MtnCreek]

Rhino,

Can you tell me what die will remove this bulge? My Dillon die has a taper at the base of the die, so the portion of the die that's doing the sizing does not reach the head of the case.
Thanks.

 

[MtnCreek]

Just a guess: What about removing several .001's from the bottom of the die???

 

[918v]

Glock 9mm chambers are tighter than Sig or Beretta 9mm chambers. The bulge is not attributable to Glock and it is not infamous. The problem is the dies. Get a Lee "U" die which sizes more at the base and your problems will go away.

 

[MtnCreek]

918V,
I'll check out the U die. My standard Lee die is not long enough to work w/ the Dillon press. Thanks.

 

[rfwobbly]

I'd like to see a photo of the case dropped into the gauge under its own weight, please.

 

[RhinoDefense]

The Dillon taper is exaggerated in drawings and on forums. The Dillon sizer will size the entire case. My guess is you don't have the die down far enough.

 

[RhinoDefense]

Lee dies will work on the Dillon toolhead. Sometimes you need to put the lock ring under the toolhead instead of above. I have to do with with the Dillon trim dies on the toolheads so I have clearance for the vacuum manifold.

 

[rbernie]

My Lee dies fit on my 550B just fine, even when using the Lee lock rings and not the Dillon lock rings.

 

[MtnCreek]

rfwobbly,

Photos attached (???). I loaded another 50 rds and had 3 failures to guage.

 

[MtnCreek]

Correction: Case guage is Dillon in lieu of Wilson.

 

[MtnCreek]

More photos. The last photo is a rd that passed the guage.

 

[918v]

Try a little more taper crimp. The round in your pic looks uncrimped. Perhaps that is where it is binding.

 

[Walkalong]

Agreed. Looks like a little bit of bell left on the cases. The case mouth should lay flat against the bullet, or .001 to .002 into it, but all the bell must be removed.

 

[1SOW]

My Lee FCD resizes all my range range pick-ups (many thousands) to fit a 9mm CZ, which has a fairly tight chamber. With the die set correctly, that last bit of handle pull needs to be firmly pulled all the way to the bottom of the stroke as that's the bulged area of unsupported cases.

Measure the loaded case mouths within 1/16" of the top. If it's sized, loaded, taper crimped and reads .378 or .377 or .376 at the case mouth, it should drop into your removed barrel chamber with a 'click' as it seats on the case mouth. Mine usually read about .3765"