9mm case gauge failures

dbracin

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I reload 9mm on a Dillon 550 using Lee carbide dies. Brass is 100% range pick up. I recently purchased the 100 hole case gauge from benstogerproshop. Wow, I am getting about 20% fall out using that gauge. Anyone else here using this gauge and what type of fall out are you getting? 99% of those cartridges that fail will actually feed in my M&P and PCC.
 
dbracin;n85729 said:
I reload 9mm on a Dillon 550 using Lee carbide dies. Brass is 100% range pick up. I recently purchased the 100 hole case gauge from benstogerproshop. Wow, I am getting about 20% fall out using that gauge. Anyone else here using this gauge and what type of fall out are you getting? 99% of those cartridges that fail will actually feed in my M&P and PCC.

On my 40, I get about 1 in 500-600, due to bulged brass at the bass. I did have some issues early on with about 1 or 2 in 100. I discovered it was my crimp. Adjusted that accordingly, now next to nothing except the random bulged brass

even then the failed gauge ones would feed and fire except the bulge. I think the gauge is tight and for a reason of guaranteed feed
 
I don't have that hundo case gauge, only that Lyman one for 9mm.
I usually get about 10% fails.
I use Lee Taper crimp vs the FCD.

However, I recently am now only getting about 2-5% fails and the only thing I know I changed in my workflow is I lube now using a homemade solution.

Like you, they still feed in my M&P. It just won't pass the gauge.
Those rounds end up in my practice pile.

YMMV.
 
I'd say I'd like to have one of those case guages.
20 out of 100 gets set aside for practice, and you have enormous peace of mind about 80 reloads that will feed and function.

I don't see a problem. If you had 20 pistols of the same caliber from different manufacturers, you would see why the gauge has a high kick out rate. Throw a little tolerance stacking at that gauge and you would appreciate what it is doing.
 
I use a LE Wilson case gauge for 9mm. I rarely have failures (maybe 1 or 2 out of 500). Now 380 is another story. I generally get about 4 out of 100, but those tend to be from where the extractor chews up the rim. Dillon dies.
 
Case gauge? Best one I've found is the barrel of my carry and comp pistol.
 
trcubed;n86929 said:
Case gauge? Best one I've found is the barrel of my carry and comp pistol.

Barrel is one at a time. :( Case guage is 100 at a time. :)

250 rds a week gets old after awhile with the barrel.
 
Mike Overlay;n87059 said:
Barrel is one at a time. :( Case guage is 100 at a time. :)

250 rds a week gets old after awhile with the barrel.

Yep, but the barrel is the most accurate measure of whether or not a round will run in a particular gun. If it don't plunk, it's junk. lol
 
trcubed;n87096 said:
Yep, but the barrel is the most accurate measure of whether or not a round will run in a particular gun. If it don't plunk, it's junk. lol

here is how that scenario plays out:

"it plunks fine in my grock. Must be good enuff."

then your buddy with the STI asks to try your
USPSA minor load and the third round locks his slide
closed because his gun is chambered for 9mm, not
9mm plus a bunch of pocket lint & dirt.

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Last edited by a moderator:
Slacker;n85800 said:
The failures are CBC, PMP, S&B, AMMOLAND and similar headstamps, right?

I have always had trouble with CBC brass in 9mm. To the point I throw them in the trash. CBC brass is harder and will not flare like other brass and will crush to the point it will not gauge when you seat the bullet. The problem is not as bad in 45 but I still get a few bad ones. I will reload CBC in 45 but that will be shot and brass will be left.
 
Slacker;n87209 said:
here is how that scenario plays out:

"it plunks fine in my grock. Must be good enuff."

then your buddy with the STI asks to try your
USPSA minor load and the third round locks his slide
closed because his gun is chambered for 9mm, not
9mm plus a bunch of pocket lint & dirt.

​​​​​

​​​​

Could happen, but no one shoots my reloads but me.
 
trcubed;n87225 said:
Could happen, but no one shoots my reloads but me.

Same here - who shares reloads?

Your problem could be any of a dozen things. If you really want to troubleshoot this you'll need to gauge them after each step of the process and see how they behave as they go through your press. Then you can isolate where the problem might be.
 
Catfish;n87334 said:
Same here - who shares reloads?

Your problem could be any of a dozen things. If you really want to troubleshoot this you'll need to gauge them after each step of the process and see how they behave as they go through your press. Then you can isolate where the problem might be.

Dang...
I must hang out with the dregs.
We are forever shooting each others reloads.
For fun, troubleshooting, testing etc.
​​​​​​

​​​​​
 
I love you guys, but I'm not putting your reloads in my firearm. I'll shoot em in yours, sure.
 
100 round shockbottle case gauge is the best piece of reloading equipment I have.

The thing with the 100 is that any anomalies stick out like a sore thumb. Slightly high primers, etc.

I usually sort my brass now and have few problems. I ditch the crap brass. It's nice to gauge a couple hundred and have them all perfect.
 
The problem with most (if not all) case gauges is that they only check the brass dimensions, they don't simulate the throat/leade of the actual chamber. In other words, you can't plunk test your ammo in a case gauge, you must use the gun's chamber to do that. Even the case gauges that advertise they are made with actual SAAMI reamers may not (and probably won't) match the chamber in YOUR gun.

The problem with chambers is that they are always looser than SAAMI specs, but one gun might be looser than another. If you use a case gauge to check your ammo, you at least know that the brass part of the cartridge will fit any gun's chamber.

Whenever I get a new bullet to try out, the first thing I do is to plunk test it to determine how deep I have to seat that bullet for it to work in all my guns. If I check the COL of my loaded rounds, and run them through the case gauge after they are loaded, I know with reasonable certainty that they will all chamber and operate in my guns.
 
Yeah, case gauge is the last instrument you use after a long list of checks and set up. It's not the be all/end all, rather just one more final level of protection.
 
Slacker;n87368 said:
Dang...
I must hang out with the dregs.
We are forever shooting each others reloads.
For fun, troubleshooting, testing etc.
​​​​​​

​​​​​

yeap.
 
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