75 BD tune up.

[Embfixer]

I am a new CZ owner with a used 99 BD. I shot about 100 rounds through it and had 10 fail to feeds. The bullet nose caught on the front lip of the mags and stopped the slide. It came with four 10 round mags and all of them have a follower that has the anti tilt legs ground off. I believe the mags to be the problem and I plan on replacing them with new MEC-GAR to see if I can get the issue resolved.

I also want to replace the springs to get it back to factory specs. Can any one recommend a spring with the proper weight springs to make this thing reliable firing factory ammo?   

Any help would be appriciated.

BTW midwayusa has MEC-GAR 16 rounders on sale right now.

[KFD147]

Here you go! http://www.gunsprings.com/1ndex.html

Jason

[brokenarrowjbe]

Might should post under curio and relics. The 99 is a sig clone I believe and is somewhat different than the 75. John

[Embfixer]

Thanks KFD147. I got a set of the Wolf factory weight springs. Now I just have to figure out how to get the hammer spring installed. Can any give me some pointers on that?

To clarify my earlier post I have a CZ-75 BD that was made in 1999. Sorry for the confusion.

[KFD147]

If you go to this Trigger job thread in the Gunsmithing FAQ's, it will show you how to remove the mainspring and replace it.
http://www.czforumsite.info/index.php?topic=14688.0


Thanks
Jason

[Embfixer]

Great, thank you very much.

[Embfixer]

I got the Wolf factory spring kit. The recoil spring is fine but the hammer spring is very thin and wont even put a dent in a primer. I think I might write Wolf. Has any one else has issues with them?   

[KFD147]

How many lbs. is the hammer spring? Make sure that you did not recieve a compact hammer spring instead of a full size. All CZ 75's use full size hammer springs whether it is full or compact size.

Jason

[Stuart]

what weight springs did you order for the recoil spring and the hammer spring??

[Embfixer]

I bought a 15lb factory recoil spring kit from them. I called Wolff and found out that the spring in question was a long firing pin spring. They ship the kits to Midway USA and Brownels with a long and short firing pin spring. Depends on the year of the gun as to which spring you need for the firing pin. My mistake.

I do want to get a hammer spring an extractor spring to have. Does any one know the weight of the hammer spring from the factory. I want this gun to be reliable with all typs of ammo above all else.

 

[Embfixer]

Well folks I have replaced the recoil spring and bought 2 new MEC-GAR mags and the thing still jams up. The bullet still catches on the lip of the mag and prevents the slide from chambering the round. I am feeling a bit discouraged by this. Has any one else had this issue? Any way of fixing it my self?

I have considered filing a bit of material off the front of the mag. I already have polished the feed ramp, but the slide catches before the bullet it makes it to it. I have tried 4 types of factory ball FMJ ammo in 125 and 115 grain, UMC, S&B, Winchester White box & Blazer Brass. It still has at least 1 fail feed every mag full. Hollow points were even worse with 3 of 10 rounds jamming. Also I am certain I am not limp wristing it.

Any help or advice would be appreciated.

I really want to like this gun but it needs to be reliable first. I will admit that when it works it is the most accurate semi auto hand gun I have ever shot. Almost all rounds hitting the 10" shoot and see target at 37 yards.

Thanks, The Embfixer

[Walt Sherrill]

The problem you describe sounds like weak mag springs.

I wouldn't replace ANYTHING else until you've shot the gun (with good mags).   Some Wolff mag springs might fix the problem -- but you may be better off just buying new ones, and tossing those.  (By the time you replace followers and springs, youv'e got almost as much in the old mags as you'd have in new ones.)

If they are 15-round tubes (rather than 16) and they are CZ mags, repair them and sell them, as a pre-B owner will snap them up.  Or sell them "as is."  The older 15-rounders fit the pre-Bs, but the new 16-rounders don't.

A real common problem encountered on this forum is to fix a gun that isn't broken... which you might be about to do.  The Wolff Springs website will show you (under the EAA listing) what factory settings are for the springs they offer.

[Embfixer]

Unfortuniatly the mags are new. They are Mec-Gar 16 rounders that I bought from Midway USA 2 weeks ago.  The same problem occures with all 5 old mags with new 10%+ springs as well. I do not know what else I can do about it aside from grinding the lip odd a mag and see how that functions.

[Stuart]

where is the bullet catching??? on the front of the mag??

are the rounds you are trying..are they of different OAL?? and the shortest ones still give problems??
truthfully of all the CZs I have had or played with I have only had one problem with ejection. so I am really curious when people have troubles..any chance the back of the round is hanging up on the extractor??

[Walt Sherrill]

What EERW said.  Sounds like your ammo is out of spec!  Are these reloads or factory ammo?

(When I first responded, it was before I read that you had bought new mags...)

Tipping rounds, the original problem sighted would have been a mag issue.  Failures to eject aren't mag problems.

Rather than wasting more money, take the gun to a local gunsmith and let him address the issues.