What's wrong with my 9mm Luger?

[Super Sneaky Steve]

First some info.

COL 1.155"
Very light taper crimp with 0.376 near the mouth.
Berry's 115grain RN plated bullets.
Assorted brass.
4.2gr of Bullseye

This is my handload. I tried to replicate some cheap Walmart Federal loads that ran good in my P1 and they do run great in my Walther.

I also shot about 200 of these out of my friends Sig250 last week and no malfunctions.

Today however I shot them out of my friends new Glock 19 and there were many problems. The Glock is new and he didn't clean it since he got it. He ran 100 rounds of the same cheap Federal stuff and it ran perfect, then he used my handloads and lots of problems.

I tried to slowly chamber a few to see what was going on and it looked like the rim of the case didn't want to slide into the extractor coming out of the magazine.

I don't understand what's wrong. Is it my rounds or his Glock? Suggestions?

 

[res45]

Well if it ran good in everything else I wouldn't assume it was just your reloads,some semi's are more finicky than others. It's possible the Glock likes a little longer OAL closer to factory ammo specs to feed reliably.

By the way not an issue with feeding in any of those pistols I don't believe but .374 case mouth dia. after the taper crimp is applied seem a bit much for plated bullet,I generally set my taper crimp die to squeeze the case mouth down about .001 to .002" Max. smaller than the case mouth dia. of a resize but unflared case.

 

[1SOW]

Very light taper crimp with 0.374 near the mouth

As said above, that is NOT a light taper crimp on any bullet. .376/7 will not damage a Berry's plated 9mm. At .374 you may have damaged the plating.

Feeding is usually associated with oal if everything else is ok.

I would pull a couple of the .374" bullets and check for marks/damage.

 

[Super Sneaky Steve]

I went back and measured a few random bullets and it's at .376. I must have slipped off the case the first time I measured. So that should be OK. I try to only do enough crimp so the bullet goes "thunk" in my barrel.

I just find it weird that a Glock would be picky with ammo. I thought you could chamber a rock you found on the ground and it would shoot.

I don't own a Glock and I don't pay any attention to them so I dunno. Maybe his had to break in more?

The only other factory 9mm I have is at an even shorter OAL of 1.108" We didn't fire this ammo in his Glock.

 

[LiveLife]

Unlike 40 caliber Glock chambers, 9mm chambers are on the tight side.

Berry's 9mm bullets are larger than jacketed at .3555"-.356" and will require some care to reliably feed/chamber in tighter chambers.

For my tight Lone Wolf and Glock 9mm chambers, 1.135" OAL will reliably feed/chamber from the magazine with .376" taper crimp.

For 115 gr FMJ bullet, I also like the 4.2 gr Bullseye charge that produces accurate shot groups with moderate recoil.

 

[1SOW]

I try to only do enough crimp so the bullet goes "thunk" in my barrel

The "goes thunk in my barrel" isn't the driver for the taper crimp. The taper crimp is to close the bell snugly around whatever bullet you're using.
The OAL is the driver for "goes thunk in my barrel". As BDS said, with that bullet shorten it up a little and it'll thunk just fine.

 

[BambiB]

What's wrong with my 9mm Luger?

It's not a .45ACP.

Ba-dum-dum.

 

[gamestalker]

Your OAL sounds a little long, considering the round won't fully seat into the extractors.

 

[rcmodel]

COL 1.155"

Seated too long.

Try 1.120" with that bullet and it will feed in anything I betcha.

rc

 

[918v]

We need that pic showing the relationship of the round with the chamber again. It needs to be the first thing people see when they enter this forum.

 

[MrWesson]

too long I have never needed to load a 9mm bullet over 1.12..

 

[PO2Hammer]

I've loaded thousands of .356" bullets for Glock 9mm's, plated and jacketed, I seriously doubt that's the problem.

The COL of 1.155" is longer than anything I've ever loaded, but is the length of Speer's 124 Lawman round, which functions fine in my Glocks.

I suspect the long COL combined with the light charge of BE is creating low pressure/low velocity and slow slide velocity. It may be just enough to cycle the other guns, but the Glock may want a little more power to cycle.

Some light rounds that would not cycle my G-19 functioned fine in a CZ 75, so I'm thinking you may have a similar situation. Turn up the heat a little and try again.

Hand cycling rounds slowly is not a good test.
If you want to test them, pull the slide back hard and let it fly forward with the gun in a safe direction.

 

[918v]

Due to geometry, a .356" bullet will engage the rifling sooner than a .355" bullet.