how to remove 9mm case bulge

[ragenmoan]

noticed that some handguns (maybe glocks) cause the cases to bulge really bad at the base. I've heard of a sizing die called a bulge buster but could not find one for 9mm. something about the cases being tapered. is there a die maker or die model that eliminates this case bulge?

[drdarrin@sbcglobal.net]

I size all of mine with a standard carbide RCBS die with no problems. I'm sure some of the thousands went through a Glock before the went through my Sig or Beretta.

[chknlyps2]

I use the Lee Bulge Buster for .40 S&W, it is just a sleeve that fits into the Lee Factory Crimp Die, it replaces the crimp sleeve and you push the case all the way through the crimp die and it finishes sizing the base to get rid of any bulge the sizing die does not get.

I am looking at the directions now and it does not list 9mm, it says it will fit the Lee FCD for .380, 357 sig, 40, 10mm 45acp, 45 gap, 45 win mag and 41 action express but no 9mm.

[deac777]

The "bulge buster" will not work on the 9mm, due to the rim being slightly larger than the case.

From Lee's site: NOTE: 9mm cases are not able to be used in the Bulge Buster because it has a slightly tapered case and the rim is not completely flush with the case.

http://leeprecision.com/case-conditioning-tools/lee-bulge-buster-kit/

[GeoffLinder]

You aren't going to find that 9mm cases have the same bulge problems that .40 cases fired from Glocks do. A Glock in .40 will give you a "guppy" like bulge on one side of the case near the base. 9mm being lower pressure does not do this to any noticeable degree.

As long as you have a standard 9mm die adjusted to contact shell plate and the final ammo drop's into and out of a case gauge or your barrel (take barrel out and use the chamber as a drop gauge) you are good to go.

A little bit of a coke bottle bulge (slimmer below where bullet is seated and then widening out a little at the case head) will not be an issue.

[J-cat]

1. Glocks have the tightest chambers of any 9mm on the market and do not bulge brass.

2. 9mm runs at the same pressure as .40

3. Standard sizing dies are too loose to resize the case back to original specs. For that you need a Lee undersize die or a shaved shell holder or both.

[Longhill]

You need to call Lee to special order a 9mm bulge buster.
I got one and it works great.
Not sure why its not posted on the website, but in the knowledge base.
Other option is to get a roll sizing machine from CasePro.

9mm Luger and Bulge Buster
Posted by on 14 October 2011 09:32 AM
To get the 9mm Luger to work with the Bulge Buster Kit, a 9mm Makakarov Factory Crimp die would need to be custom made. The cost is $30.00 plus shipping & handling and we would need a bullet seated in an empty case.

http://leeprecision.net/support/index.php?/Knowledgebase/Article/View/26/0/9mm-luger-and-bulge-buster

[joefreas]

1. Glocks have the tightest chambers of any 9mm on the market and do not bulge brass.

2. 9mm runs at the same pressure as .40

3. Standard sizing dies are too loose to resize the case back to original specs. For that you need a Lee undersize die or a shaved shell holder or both.

Wrong, Check out: Glocked brass.

[GeoffLinder]

Wrong, Check out: Glocked brass.

Correct, Glock .40's do not fully support the rear of the case on the underside (above feed ramp) and a guppy belly bulge is a standard result. 9mm Glocks do not exhibit this because the chamber supports the case better in this area above the feed ramp. In fact, Glock 9mm chambers are known to be tighter than most 9mm's.

[CalTeacher]

I don't get this bulge in any if my 9mm or .40 Glocks. I have never seen a piece of brass from a glock that couldn't be resized with a standard resizing die...although I stay the hell away from any brass fired in a 9 major open gun.

[HighLander51]

1. Glocks have the tightest chambers of any 9mm on the market and do not bulge brass.

2. 9mm runs at the same pressure as .40

3. Standard sizing dies are too loose to resize the case back to original specs. For that you need a Lee undersize die or a shaved shell holder or both.

Wrong on 1 and 3. Glocks have the loosest chamber of any semi auto, You must not own one. And the brass resizes with standard dies just fine. I have loaded around 150,000 rounds of 9mm in the last 12 years on a Dillon.

[J-cat]

You are 100% wrong.

If you measure the base diameter of a 9mm case fired out of a Glock chamber and compare it to a Sig Beretta or S&W, you'll find the Glock case .002" smaller. I have 3 Glock 9mm pistols. While I haven't loaded 120,000 rounds on a Dillon, I can see clearly and use measuring tools correctly.

[GeoffLinder]

I don't own a Glock in .40, just several in 9mm. My experience has been that 9mm cases from my Glocks that still have factory barrels exhibit a lot less coke bottle mode after sizing than cases from my SIG P226 do. My facory barreled Glocks are all 15-18+ years old so maybe this is a factor in chamber size.

Just for fun I will mention that my open Glock has a Barsto barrel and I load to major PF for it, those cases still drop check in my 9mm ammo gauge even before they are resized :-) I would never use a stock Glock barrel for 9mm major though.

[CalTeacher]

I've never compared the size of fired brass from different 9mm pistols, but I will say that the 9major brass I picked up was noticeably harder to size than normal. Not sure if they were shot through a stock or aftermarket barrel, though.

It's interesting how many people have experienced the Glocked brass issue, yet I've never seen it. I'd be curious to see what load they're shooting to cause the problem.

[bohoki]

get a new barrel

my glock doesn't ruin my brass