CBC casings

barryc123 · August 6, 2021, 12:25 PM

Does anyone else have case bulging problems when loading CBC casings in 9mm? I know my COL is correct. I have no problems with any other casings.
Thanks
Barry

Shadow9mm · August 6, 2021, 02:54 PM

I found they tend to stick when resizing and do not resize well compared to other headstamps. I also found that they do not crimp normally and sometimes stick in my seating die when crimping. I have also had crimped bullets fall out or spin freely. I think the brass is too soft based on the sticky feeling and not wanting to stay where it was put with my dies. Gave me a bunch of problems on my progressive press.

I cull all CBC brass now, whenever I get range pickup, or buy once fired, I clean it then go through and remove all CBC and toss them in my scrap/damaged brass tub.

**Unclenick** · August 6, 2021, 04:20 PM

May be an "economical" alloy.

Shadow9mm · August 6, 2021, 05:53 PM

can you post a pic of the bulged casings? might help. are the bulges at the base of the bullet? could be bullets going in at an angle, not straight in. you might need to flare case mouths a touch.

Also if its small bulges you might consider getting a lee factory crimp die. it does a light resize during the crimp and help to smooth out any bulges. you can adjust the crimp as well for no crimp to heavy crimp so if you wanted to use the crimp in your seater you could just use it to smooth things out.

they are about $23 off midway
https://www.midwayusa.com/product/1011209519

FrankenMauser · August 7, 2021, 12:47 AM

They're generally pretty good.
But bad batches come from all budget and mainstream brands, occasionally.

(Some more than others... **cough** Winchester **cough** Remington **cough**.)

**Mike Irwin** · August 7, 2021, 11:14 AM

CBC is Brazilian made.

I've never been particularly impressed with their cases.

barryc123 · August 7, 2021, 11:43 AM

Thanks guys, very helpful information. I have a lee factory die, when that full length sizing didn’t help I just stopped using CBC casings.
Again thanks !

Jim Watson · August 7, 2021, 11:53 AM

I don't know the percentage CBC in my range pickup brass, but there isn't enough or bad enough that I get bad rounds and have to pick over a lot of mixed brass

Average Joe · August 7, 2021, 03:44 PM

Very tight primer pockets, I trash them.

**Unclenick** · August 7, 2021, 04:12 PM

You find the tight primer pockets on IMI and other foreign brands as well. I measured it one time, and the folks in the metric parts of the world seem to run them about 0.0004" tighter, probably due to a metric rounding result. But you can run them through a primer pocket swager or use a primer profile cutter to make them accept primers as easily as anything else.

armoredman · August 9, 2021, 01:44 AM

Only thing I remember about CBC brass in 9mm is the tight primer pockets. Makes Fiocchi seem loose. I never have any issues with CBC brass and cast bullets - that's Federal mostly.

mehavey · August 9, 2021, 06:39 AM

Quote:

Originally Posted by armoredman

I never have any issues with CBC brass and cast bullets

^^^ ditto here ^^^

AwayToTheRange · October 1, 2021, 01:18 PM

Quote:

Originally Posted by armoredman

Only thing I remember about CBC brass in 9mm is the tight primer pockets. Makes Fiocchi seem loose. I never have any issues with CBC brass and cast bullets - that's Federal mostly.

Same exact issue but noting critical. I us CBC 9mm cases with S&B primers. No issue of any sort. Using Lee die set on pro 1000

armoredman · October 4, 2021, 12:41 AM

I did have some bulging with Hornaday XTPs very recently with CBC brass, (you guys jinxed me!), but the Lee FCD ironed that one right now.

uncle.45 · October 24, 2021, 10:48 AM

I hate to hear of people not liking CBC brass!
I've used it in 45acp for several years, and have had zero problems with sizing, loose primers, neck tension, or anything.
Some of them have been loaded at least 30 times. No problems!
I've only had 2 or 3 split necks in about 7 years.
I just got 100 free CBC nickel casas for 357 magnum carry ammo.
I've never used nickel before, but they were free from my father, so I gladly accepted the lifetime supply he was offering.

higgite · October 24, 2021, 11:29 AM

I haven't experienced bulging with CBC 9mm brass, but when I run across a CBC case while processing mixed headstamps, I generally know it because the CBCs take more force to size/decap and to fully seat new primers.

DMY · October 25, 2021, 07:35 PM

I also cull 9mm CBC cases due to tight primer pockets. I tried using a FA primer pocket uniformer and crimp remover, but I still had some Federal and CCI primers which would not seat. Not worth ruining primers, given the current cost. I can't comment on seating or crimping because I never got that far we it the CBC's.

Sevens · October 25, 2021, 10:04 PM

I had not heard that CBC was Brazilian. Last I saw, CBC was Magtech and I had thought Magtech was from Mexico. Could be both places?

higgite · October 25, 2021, 11:32 PM

Quote:

Originally Posted by Sevens

I had not heard that CBC was Brazilian. Last I saw, CBC was Magtech and I had thought Magtech was from Mexico. Could be both places?

Magtech's contact page doesn't mention Mexico, but it dies say this:

CBC - COMPANHIA BRASILEIRA DE CARTUCHOS
Av. Humberto de Campos, 3220
09426-900 - Ribeirão Pires / SP - Brazil

Maybe you're thinking of Aguila?

Sevens · October 26, 2021, 03:39 AM

Yes, maybe I am!

Metal god · October 26, 2021, 08:18 PM

I was on a different form and a very similar question was asked involving the CBC cases . In That thread several posters remarked on several different cartridges that CBC makes brass for seem to cause issues . My experience with these cases is mostly with 223 brass and it was significantly thicker than most commercial brass if not all . It resulted in the powder almost overflowing out of the case due to less case volume and produced 100 ft./s faster velocities compared to other cases using the same charge . This thread and that other thread leads me to believe that CBC cases are simply just thicker walled cases resulting in all kinds of problems .

Hammerhead · October 27, 2021, 12:45 PM

I have a batch of 9mm CBC brass that works well for me.
It's the hardest 9mm brass I have, but it seems consistent.

Metal god · October 27, 2021, 02:29 PM

Quote:

It's the hardest 9mm brass I have

This is my/our dilemma . Is it harder brass or is it thicker walled brass which makes it seem harder ? One is no big deal the other reduces case volume which increases pressure at same charge weights using just about any other brass .

higgite · October 27, 2021, 04:17 PM

Get a scale, an eye dropper and a glass of water and measure the volume. You won't have to guess.

Hammerhead · October 27, 2021, 04:20 PM

Case wall thickness and case weight match my Blazer brass, but the CBC is noticeably harder, you can feel it when you seat a bullet.
If you load CBC and Blazer with the same bullets and die settings, the CBC rounds end up a consistent .010" longer than the Blazer rounds.
I had to drop my Lee seating die, it just wasn't working with CBC brass and XTP/HAP bullets. Went to a comp seater and now I don't have to worry about my brass. Accuracy was instantly improved too.

August 6, 2021, 12:25 PM	#1
barryc123 Junior Member Join Date: March 6, 2021 Posts: 9	CBC casings Does anyone else have case bulging problems when loading CBC casings in 9mm? I know my COL is correct. I have no problems with any other casings. Thanks Barry

August 6, 2021, 02:54 PM	#2
Shadow9mm Senior Member Join Date: March 21, 2012 Location: Indianapolis, IN Posts: 3,969	I found they tend to stick when resizing and do not resize well compared to other headstamps. I also found that they do not crimp normally and sometimes stick in my seating die when crimping. I have also had crimped bullets fall out or spin freely. I think the brass is too soft based on the sticky feeling and not wanting to stay where it was put with my dies. Gave me a bunch of problems on my progressive press. I cull all CBC brass now, whenever I get range pickup, or buy once fired, I clean it then go through and remove all CBC and toss them in my scrap/damaged brass tub. __________________ I don't believe in "range fodder" that is why I reload.

August 6, 2021, 04:20 PM	#3
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,060	May be an "economical" alloy. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

August 6, 2021, 05:53 PM	#4
Shadow9mm Senior Member Join Date: March 21, 2012 Location: Indianapolis, IN Posts: 3,969	can you post a pic of the bulged casings? might help. are the bulges at the base of the bullet? could be bullets going in at an angle, not straight in. you might need to flare case mouths a touch. Also if its small bulges you might consider getting a lee factory crimp die. it does a light resize during the crimp and help to smooth out any bulges. you can adjust the crimp as well for no crimp to heavy crimp so if you wanted to use the crimp in your seater you could just use it to smooth things out. they are about $23 off midway https://www.midwayusa.com/product/1011209519 __________________ I don't believe in "range fodder" that is why I reload.

August 7, 2021, 12:47 AM	#5
FrankenMauser Senior Member Join Date: August 25, 2008 Location: In the valley above the plain Posts: 13,424	They're generally pretty good. But bad batches come from all budget and mainstream brands, occasionally. (Some more than others... cough Winchester cough Remington cough.) __________________ Don't even try it. It's even worse than the internet would lead you to believe.

August 7, 2021, 11:14 AM	#6
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,380	CBC is Brazilian made. I've never been particularly impressed with their cases. __________________ "The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza Baby Jesus cries when the fat redneck doesn't have military-grade firepower.

August 7, 2021, 11:43 AM	#7
barryc123 Junior Member Join Date: March 6, 2021 Posts: 9	Thanks guys, very helpful information. I have a lee factory die, when that full length sizing didn’t help I just stopped using CBC casings. Again thanks !

August 7, 2021, 11:53 AM	#8
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,535	I don't know the percentage CBC in my range pickup brass, but there isn't enough or bad enough that I get bad rounds and have to pick over a lot of mixed brass

August 7, 2021, 03:44 PM	#9
Average Joe Senior Member Join Date: August 29, 2005 Location: Central Florida Posts: 1,325	Very tight primer pockets, I trash them.

August 7, 2021, 04:12 PM	#10
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,060	You find the tight primer pockets on IMI and other foreign brands as well. I measured it one time, and the folks in the metric parts of the world seem to run them about 0.0004" tighter, probably due to a metric rounding result. But you can run them through a primer pocket swager or use a primer profile cutter to make them accept primers as easily as anything else. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

August 9, 2021, 01:44 AM	#11
armoredman Senior Member Join Date: May 22, 2007 Location: Arizona Posts: 5,297	Only thing I remember about CBC brass in 9mm is the tight primer pockets. Makes Fiocchi seem loose. I never have any issues with CBC brass and cast bullets - that's Federal mostly.

October 4, 2021, 12:41 AM	#14
armoredman Senior Member Join Date: May 22, 2007 Location: Arizona Posts: 5,297	I did have some bulging with Hornaday XTPs very recently with CBC brass, (you guys jinxed me!), but the Lee FCD ironed that one right now.

October 24, 2021, 10:48 AM	#15
uncle.45 Senior Member Join Date: November 11, 2017 Location: Lakeland, Florida Posts: 134	CBC Has Been Mui Bueno For Me I hate to hear of people not liking CBC brass! I've used it in 45acp for several years, and have had zero problems with sizing, loose primers, neck tension, or anything. Some of them have been loaded at least 30 times. No problems! I've only had 2 or 3 split necks in about 7 years. I just got 100 free CBC nickel casas for 357 magnum carry ammo. I've never used nickel before, but they were free from my father, so I gladly accepted the lifetime supply he was offering. __________________ Shoot Often, Have Fun, BE SAFE!

October 24, 2021, 11:29 AM	#16
higgite Senior Member Join Date: October 21, 2010 Posts: 1,025	I haven't experienced bulging with CBC 9mm brass, but when I run across a CBC case while processing mixed headstamps, I generally know it because the CBCs take more force to size/decap and to fully seat new primers.

October 25, 2021, 07:35 PM	#17
DMY Senior Member Join Date: September 10, 2015 Posts: 152	I also cull 9mm CBC cases due to tight primer pockets. I tried using a FA primer pocket uniformer and crimp remover, but I still had some Federal and CCI primers which would not seat. Not worth ruining primers, given the current cost. I can't comment on seating or crimping because I never got that far we it the CBC's.

October 25, 2021, 10:04 PM	#18
Sevens Senior Member Join Date: July 28, 2007 Location: Ohio Posts: 11,756	I had not heard that CBC was Brazilian. Last I saw, CBC was Magtech and I had thought Magtech was from Mexico. Could be both places? __________________ *Attention Brass rats and other reloaders:* I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.

October 26, 2021, 03:39 AM	#20
Sevens Senior Member Join Date: July 28, 2007 Location: Ohio Posts: 11,756	Yes, maybe I am! __________________ *Attention Brass rats and other reloaders:* I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.

October 26, 2021, 08:18 PM	#21
Metal god Senior Member Join Date: April 10, 2012 Location: San Diego CA Posts: 6,875	I was on a different form and a very similar question was asked involving the CBC cases . In That thread several posters remarked on several different cartridges that CBC makes brass for seem to cause issues . My experience with these cases is mostly with 223 brass and it was significantly thicker than most commercial brass if not all . It resulted in the powder almost overflowing out of the case due to less case volume and produced 100 ft./s faster velocities compared to other cases using the same charge . This thread and that other thread leads me to believe that CBC cases are simply just thicker walled cases resulting in all kinds of problems . __________________ If Jesus had a gun , he'd probably still be alive ! I almost always write my posts regardless of content in a jovial manor and intent . If that's not how you took it , please try again .

October 27, 2021, 12:45 PM	#22
Hammerhead Senior Member Join Date: May 31, 2004 Location: Minnesota Posts: 2,432	I have a batch of 9mm CBC brass that works well for me. It's the hardest 9mm brass I have, but it seems consistent.

October 27, 2021, 04:17 PM	#24
higgite Senior Member Join Date: October 21, 2010 Posts: 1,025	Get a scale, an eye dropper and a glass of water and measure the volume. You won't have to guess.

October 27, 2021, 04:20 PM	#25
Hammerhead Senior Member Join Date: May 31, 2004 Location: Minnesota Posts: 2,432	Case wall thickness and case weight match my Blazer brass, but the CBC is noticeably harder, you can feel it when you seat a bullet. If you load CBC and Blazer with the same bullets and die settings, the CBC rounds end up a consistent .010" longer than the Blazer rounds. I had to drop my Lee seating die, it just wasn't working with CBC brass and XTP/HAP bullets. Went to a comp seater and now I don't have to worry about my brass. Accuracy was instantly improved too.

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