New CZ75B feeding issues

[tcmass]

Here's a shocker - premium ammo delivers exceptional performance.  What do most folks use - the cheapest ammo they can find.  And when there is a problem, they typically try to figure out what's wrong with their pistols.

I definitely understand cheap ammo has it's consequences. Sure, I ordered a heavier spring but I also have factory and heavier springs for all my other semi auto pistols as well. If it runs flawless for multiple boxes of whatever ammo that is deemed better the UMC then I won't feel a need to at least try the heavier spring. I'm not blaming the mags, or the firearm directly. As I said in the first post, 125 rounds is hardly a test for any pistol. I'm just telling my experience since there's more then one thread with failures to feed.

[1SOW]

For instance I have experienced failures to feed with WWB and upon inspection, found the case mouth was not crimped from the factory.

If it was  some time back, I'd be willing to make a "modest" bet that those "WINS" came from a "valu-pack of 100".  The Win White box of "50",  individually set in styrofoam pockets, is more expensive, and I believe noticeably better ammunition.   This may have changed when they started using "WCC" cases in the value paks, but I don't know about those for reliability.

[bozwell]

I had a hang-up in my G34 a few weekends ago with a 100 round box of WWB.  Basically, the next round didn't seat properly, and it was easy to clear the malfunction.  My guess was the charge was just extra light.  That said, that's the first WWB I've shot in a long time, and also the first malfunction I've seen in a few thousand rounds of mostly S&B/RVS.  Go figure.

[jjdurso]

I definitely tune my guns to the lowest common denominator, I don't want anything to do with a picky pistol; I buy the cheapest ammo I can find (and only when it's on sale!).  Polish the feed ramp, tune the springs, it's really a badge of honor to me that my guns with eat anything I feed them.  The only ammo I stay away from is steel cased (mostly because my range won't allow it), other than that, I love to shoot re manufactured Bitterroot Valley ammo, even at matches.

Back when I was shooting 25M Rapid Fire Pistol, my Walther OSP2000 would only function with $8/box (now it's $15!) RWS .22 short ammo.  Now that I shoot USPSA with a .40, the cheaper the better.

[tcmass]

Update:

I shot 50 rounds of Federal Estate, 50 rounds of Blazer Brass, and 82 rounds of Sellier and Bellot though the CZ75 today. 1 failure to feed on the 3rd magazine of Federal Estate as I released the slide stop. Instead of dropping the magazine and clearing it, I decided to bump the bottom of the magazine in case it wasn't seated fully. It went right into battery. I made it a point to make sure I was giving the magazine's a little extra gusto when I was inserting them. Zero problems.

My previous 2 failures were in the middle of shooting instead of the first round in the chamber, but it seems to have worked itself out by me correcting my errors. Next time I go shooting I might be plagued with failures, but today was a good day.

[1SOW]

tcmass, glad to hear it's running better.  Every pistol has it's own personality to adjust to.
I'm a believer in firm mag inserts.  The top round in the mag hits the surface of the battery rail, compressing the mag spring and allowing the mag. release to go fully into its rectangular hole in the mag..  A firm mag. insert will release a locked back slide and feed the top round on my 75B since it was new.

Keep your mags clean and your gun slippery, and you'll be good-to-go.  

[Joe L]

tcmass--Sounds like a good update to me.  When I get in a new pistol, I either use stout loads or a weaker than factory recoil spring until the gun loosens up some, usually by around 500 rounds.  I also clean it and use very light grease on the rails and clean it every range trip during break-in.  After that, no problems. 

I mainly shoot Atlanta Arms reloads (130 pf) and Rem UMC in the 9mm pistols.  The Remington and AA loads are the lowest loads I've found which is good for minimizing recoil for an IDPA match and training.  But they won't cycle most new stiff guns reliably.   Hotter loads will. 

If yours is hard to get in to battery completely, then a stronger recoil spring is needed to overcome the slide friction as the round is moved in to the chamber.  If the slide won't go back far enough to catch the next round and eject the spent case, you need a weaker recoil spring until the slide loosens up.  All this assumes there aren't any serious flaws or excessive friction in the slide/barrel/frame fit-up and that the extractor is not too highly tensioned.

Sounds like you are making progress.  Another few boxes of ammo and I bet you can go back to the Rem UMC and it will run OK. 

Joe

[curtisp40]

I bought my CZ75B used about a year and a few months ago. From the beginning, I had feeding issues, regardless of the brand of ammo. Finally, I took a close look at what was going on. The extractor was binding inside of the channel while the round was going up the feed ramp. I polished every part I could think to polish, and tried replacing springs, all to no avail. Eventually I got a new extractor and gently filed the angle of the bottom edge so that it would slide through the channel without binding. I changed nothing on the back side of the extractor, but only filed a bit of an angle on the top side (and of course followed up with a fine sandpaper). I am by no stretch a gunsmith, but I figured, hey, the extractor is cheap enough. Anyhow, a thousand rounds later and no problems.