Is there Die set for Match Chamber 9mm?

[SoCal1911]

delete

['ol shooter]

Lee sells a setup that you mount on your press to run the cases butt end first up through a factory crimp die. I have it for the 9mm but have not needed to use it yet. I have successfully used it on .40 cases that were bulged. They didn't always drop into a gage but dropped right into my barrel. Are you sure it isn't insufficient removal of belling on the case mouth?

[mjmagee67]

I bet the bullet is running into the rifling. Load shorter and do the plunk test. My "Match" chamber on my Kimber had a very short throat.

[pacrat]

Picked up EMP with a tight chamber, been told they have a Match chamber. My some of my reloads do not fully chamber, they chamber except the last bit.
My reloads near the base are .002 to .003 bigger than Win. White box that work well. Some of the brass I reload could be from Glocks (range brass)that causes a bulge near the base. My reloads work well in my P7M8 and Baby Eagle.
Does RCBS or other Mfg make dies that will resize my brass a little smaller?

Baby Step diagnosis technique. Take a handfull of empty fired cases that you "know" don't fit your pistol's chamber. Resize them in your present dies. "Plunk Test" them in the chamber of your pistol. If they still don't fit. You need a push through base sizing die. If they now fit, look to ogive/lands conflict.

All Standard shell holders are 1/8" from top to base deck. Add to that the tapered chamfer in mouth of die. And there is always that amount of the cartridge case that cannot be sized by a standard die. Cases swollen in that area where a standard die can't reach. Require "Push Through" die system.

EDIT.....................added

Cheap price of 9mm cases. You have to determine if economically feasible for the amount of fat cases you have. Whether to get a push through or not.


JM2c

[noylj]

Must meet SAAMI, unless you specifically ordered undersized and barrel is so marked.
In almost all cases, the whole "My gun has a tight chamber" really means "I didn't set up my dies properly" or "I picked up some cases that were fired in 9mm Major and my sizing die can't size down far enough."
If factory ammo works, reloads will work.
The solution to chambering problems is to determine the cause:
Take the barrel out of the gun. Drop rounds in until you find one that won't chamber. Take that round and "paint" the bullet and case black with Magic Marker or other marker. Drop round in barrel (or gage) and rotate it back-and-forth a few times.
Remove and inspect the round:
1) Scratches in the ink on bullet--COL is too long
2) Scratches in the ink on edge of the case mouth--insufficient crimp
3) Scratches in the ink just below the case mouth--too much crimp, you're crushing the case
4) Scratches in the ink on case at base of bullet--bullet seated crooked due to insufficient case expansion (not case mouth flare) or improper seating stem fit
5) Scratches in the ink on case just above extractor groove--case bulge not removed during sizing. May need a bulge buster. For 9x19 and 9x21, I use a Lee 9mm Mag FCD for the Bulge Buster.

[Milsurp Collector]

Does RCBS or other Mfg make dies that will resize my brass a little smaller?

Lee sells a die that specifically sizes 9mm brass slightly undersize https://www.midwayusa.com/product/38...-die-9mm-luger

I bought one recently to replace my standard 9mm resizing die.

[fguffey]

Is there Die set for Match Chamber 9mm?

Is there a reloader that can verify a die? Is there a reloader that van verify the case dimensions?, is there a reloader that can verify case clearance as in the clearance between the case and chamber?

If the bolt will not close how difficult can it be to measure the difference in dimensions between the case and chamber? This stuff does not lock me up. I have comparators, I have comparators because I do not have an infatuation with head space. My cases do not have head space and the tools I use to measure cases with are not head space measuring tools.

F. Guffey

[pacrat]

Lee sells a die that specifically sizes 9mm brass slightly undersize https://www.midwayusa.com/product/38...-die-9mm-luger

I bought one recently to replace my standard 9mm resizing die.

Personal curiosity about those dies. Do they also have little or no chamfer at the bottom opening? So they size farther "down" the case? That is an issue with Glocked Cases.

Inquiring minds thing.

Another thought.......Does it appear to you. As if the top of the die normally above the press. Could be sawed off, and then the die could serve the purpose of a "Push Through" die? Using a "rod" in a shell holder.

[rdtompki]

As others have indicated first thing to check is the OAL. If you run a case only through your press will it chamber of still hang up on the base of the case?

Bullet profile is a big deal with chamber as short as the EMPs. Acme 115gr, for example, must be loaded short, Bayou 115gr not so much.

You can use a Lee/EGW Undersize die in your first stage would eliminate most/all issues with a base bulge or a Lee FCD as the final stage which has a big fan base.

First step - figure out the nature of the problem.

[Bert Gamble]

In my case, the culprit was the searing die. Switched to a Redding comp seating due and problem solved.

[alland]

Another thought.......Does it appear to you. As if the top of the die normally above the press. Could be sawed off, and then the die could serve the purpose of a "Push Through" die? Using a "rod" in a shell holder.

This would not work well for 9mm. A 9mm is tapered and the area of the die that sizes the mouth is way too small for the case head and rim.

[pacrat]

This would not work well for 9mm. A 9mm is tapered and the area of the die that sizes the mouth is way too small for the case head and rim.

Sometimes an idea just turns into a brainfart. As in this instance.

Valid point that I overlooked in haste. 9mm Case taper is only .003 OA, but this die is .002-.003" undersized to start with. So that would make the case base .006" minimum undersized. Not Good.

And it is a "carbide" die insert. So you can't counterbore it from the top to relieve the "overly constricted neck" portion.

But does give rise to another idea. If one was to take a "standard 9mm" carbide insert sizing die. And counterbore it from the top to just shy of the carbide insert. It could serve as a "Push Through" for bulged cases because of the same .003" case taper. Because it would be the same dimension at the top.
As the Undersized die is at the bottom.

[santacruzgunner]

Reading this made my head hurt

[mjmagee67]

Here is what I found out, it is a bullet problem, mainly. My reloads were with a flat point bullets, and were running into the rifling of the EMP barrel. There is very little throating ahead of the chamber. To get the flat point bullets to chamber I had to go 1.030 OAL, which I choose not to do since it would raise the pressure. I had some round nose bullets, which have a longer tapered profile that did not run into the rifling. Loaded to 1.130 OAL, all chambered without any problems. Also the chamber is only .002 larger then the case dia, very little clearance. I had to lower my resizing die down to were it touched the shell plate, which seemed to remove the Glock bulges. Dropping the reloads into the chamber of the barrel confirmed all of this, the good old ker plunk test works well. Now I see what people were saying when they said the EMP is finicky with the ammo you feed it. Will be testing the reloads maybe tomorrow. I have been reloading for many years, and it has been awhile since I have run into a problem like this, and that would of only been with reloading for rifles, never with pistol ammo.
Thanks to everyone that offered their advice !

Huh.....that's what I said...common problem with "match" stuff.

[alland]

If this were mine, I would get a throating reamer and lengthen the throat. I would want bullets loaded at any reasonable length to chamber without problems.