CZ 75B 9mm Problem with BLAZER Alum Ammo??

[bratch]

I've had problems with the Blazer in a SP01 and 75B. The SPO1 is 100%factory. The 75B is factory except for the recoil spring and I'm not sure if I changed it out or not with a Wolff.

Mine have been stovepipes and a couple have been pretty nasty jams.

 

[boogalou]

I feed all my CZ's a steady diet of my own brass reloads and have never used Blazer ammo in my guns. I honestly can't think of a time when I've ever had a FTE, although I've had a few FTF. I use 15 or 16# recoil springs, +10 percent wolff mag springs, OEM extractor springs, and except for some experimenting, mostly OEM mainsprings.

So far that combination has worked for me.....

 

[wally]

If the gun with factory springs is rated for +P+ shouldn't be an issue, if not, yes you could trigger the same potential problems with too hot ammo.

I'd be leary of +P+ with your much reduced mainspring. But then I've never purchased +P+ ammo either!

I don't find the CCI aluminum Blazer to be loaded particularly light, Wolf, Monarch steel, and Monarch brass all seem lighter in recoil to me than the CCI aluminum Blazer which seems about the same as Winchester "USA" white box to me. But I've not chronographed anything in about 20 years.

Me I prefer to shoot 'em than work on 'em. Other than maybe changing sights (never when I was young, often a necessity now) and grips I generally only work on them if there is a functional problem or when something breaks -- if you've never broken a gun, you just ain't shooting enough

--wally.

 

[1SOW]

Wally: I'll bet someone here has chronoed the WC White Box.9mm...?

I think you're right about the Monarch speed. I've never bought +P+ either, but I did shoot a friends in my Sig and I didn't like the muzzle flip. In a big steel gun I guess it would be okay.

I know exactly what you mean about the sights and old eyes. I modified/painted the CZ sites to duplicate the stock Sig P239 post on the rear and big dot on the front. I fixed it. They are clearer & faster for me. My scores are very good, my times are very slow. As slow as I am, I need all the help I can get.

I will check the brass this weekend.

One LAST comment: Brass has it's own lubricating/friction/expansion qualities and maybe because I'm old, I think a case should be brass. There's reasons you can't reload an aluminum case. I"M NOT TRYING TO START SOMETHING HERE...just a thought.

Thanks again to all. This is a good forum.

 

[wally]

I modified/painted the CZ sites to duplicate the stock Sig P239 post on the rear and big dot on the front.

Have you tried the fiber optic insert front sights? http://czcustom.com/catalog/index.php?cPath=67

I put one on my CZ75B and most of my other range favorite guns. I find with a plain black square rear notch they are almost as fast as a red dot optic.

I think ammo should be cheap Don't take too long for the ammo I run thru my range favorites to have cost more than the gun did!

I have a budget for ammo, reloading and aluminum or steel cased ammo lets me shoot more so that's what I do. These days I save the aluminum and steel cased ammo for situations I'd be losing most of the brass anyways, but back when aluminum or steel cased 9mm was $80/1000 I shot mostly 9mm aluminum and steel cased ammo -- I really enjoyed not reloading and chasing brass.

--wally.

 

[1SOW]

I would like to try it, but I shoot "Production". I can paint sights/change to other OE sites, smooth the OE or approved action, and tape grips, but can't put other than factory sights that came with this model.

 

[jeremy76]

One thing about the CZ that I think has eluded most people here is that it is made in eastern europe where the steel case is the standard and is what the extractor is designed for. The brass case is strong enough to handle the added abuse of this design but aluminum can not handle it reliably. It isnt what you are doing to the gun, it is what the engineers did to it to make it as reliable as they could for there standard ammo.

 

[1SOW]

I went to the range today, mostly to practice double taps.

After that, I loaded two mags with 5 rounds each with aluminum Blazers.
I had two identical FTE jams, one on each mag of 5rds.

Of The Blazers that did eject, the cases actually hit my right arm or just beyond. They were barely ejected.

I also fired 50 rds WC White Box and 50rds Monarch brass and the cases were landing about 4'-6' away. Which might be a little less than before I changed springs.

I may get a new extractor spring and test again just because I don't like not being ABLE to shoot them. I do not plan to use aluminum rounds...ever... other than to test a new spring.

jeremy76 : I'm scared to find out what happens next if I try the Monarch steel.

 

[1SOW]

JEREMYre

One thing about the CZ that I think has eluded most people here is that it is made in eastern europe where the steel case is the standard and is what the extractor is designed for. The brass case is strong enough to handle the added abuse of this design but aluminum can not handle it reliably. It isnt what you are doing to the gun, it is what the engineers did to it to make it as reliable as they could for there standard ammo.

I got this response from the CZ Forum re CZ designed for steel

The above statement just isn't true. 1) CZ 75/85 pistols were designed and intended for export, not for use by Warsaw Pact nations. 2) They certainly are not designed for steel-cased ammunition, as evidenced by the tight chamber, short leade, and design of the external extractor. 3) The Vlasim plant (formerly and now again Sellier & Bellot) began manufacturing brass cased, boxer primed 9mm Para ammunition specifically for the design and development of the CZ 75 in the early 1970s. At the time, this was the only facility in Czechoslovakia that manufactured handgun ammunition. 4) This decision was made because steel-cased military surplus from the 1940s and 1950s proved unsuitable for testing.

Steel cases share one important characteristic with brass cases: they weigh about the same. Steel cases are slightly harder on an extractor, but the real isssue is the lacquer. (Also, most extractors seem to break due to sticky, lacquered chambers.) The aluminum cases just don't weigh nearly as much, and this causes most of the problems.

Their conclusion agrees with mine. Okay to plink with if it works with your gun, but never bet your life on it.

 

[wally]

would like to try it, but I shoot "Production". I can paint sights/change to other OE sites

Since the site selling the sights is czcustom.com, might be worth an inquiring to see if they are a CZ factory option or not to meet your production gun specification.

--wally.

 

[1SOW]

Cuz the bible told me so

Wally: They also sell CZ 75 mag funnels. NOT Production class.
The lists are pretty specific as to what can or cannot be changed/modified for a given class. Handguns & their physical size, parts including sites/holsters-mag holders & their positions and angle on your body/etc/etc/ X 50.
uspsa.org/rules/

If that Zigana F model comes out shooting like it looks, I may have this CZ as a range gun.

 

[1SOW]

Cz Treated Me Right

I contacted CZ USA and described the problem with Blazer aluminum. I also said that IF they thought it was likely the extractor spring, that I could have it installed here rather than sending the gun in to be worked on.

I got no reply.

On the third day I recieved an extractor spring in the mail. No message, just a business card from Mike Eagleshield.

If it works, I'm happy with their response.