CZ Shadow mags not dropping free
- Thread starter alphamike
- Start date
I have 5 brand new 10 rounders, I have 3 aftermarket CZ, 5 older CZ mags and 6 Tanfoglio. It happens with all of them. Tried different ammo, different projectiles, even snap caps. It occurs sparatic throughout the magazine, and each mag isn't consistent where it happens.
- Location
- Off the "X"
YOur magazine feed lips are coming apart... I've found CZ mags to be pretty weak and the feed lips don't take much abuse before spreading and causing double feeds and the problem you described. Try squishing them together a bit. You following is probably poking through a bit more than it should (you can tell, look at the follower and you can see which part shouldn't be coming through) so squish them feed lips until the follower doesn't come through anymore.
Need to get extra mags for my new Shadow for IPSC. I find the CZ mags kind of cheaply made. Any suggestions as to what mags to get that will take being dropped on concrete with some rounds still left in or full if required?
I'm using Wilson Combats for my 1911 and I haven't had issues when I do that. Not cheap but I'm worth it
I'm using Wilson Combats for my 1911 and I haven't had issues when I do that. Not cheap but I'm worth it
When the bullet slides forward in the mag it moves over top to slide release. When you go to drop the mag, the bullet hits the slide stop and is prevented from dropping.
Look on CZ Custom. They have the new style slide stope with a slight modification to correct this. I don't know if they have it in the extended shadow version.
Different bullet may help, try a TC style or a longer round nose like CCI Blazer.
Look on CZ Custom. They have the new style slide stope with a slight modification to correct this. I don't know if they have it in the extended shadow version.
Different bullet may help, try a TC style or a longer round nose like CCI Blazer.
I'd like to correct the post above.
With long rounds like with some 147gr bullets or just loaded longish or certain bullet shapes, when loaded mag is inserted or next round moves UP in the mag to get in place of stripped and chambered round, this round's bullet hits the bit of slide release that is inside frame pushing it up, thus locking the slide back.
You can file it off just so that it still engages on empty mag with follower pushing on it.
Well, the area that 'needs' beveling should be already beveled to a degree straight from the factory. The surface to be polished, should be shiny from factory but may not be well polished.
Here is from IPSC rules book, page 79 (http://www.ipsc.org/pdf/RulesHandgun.pdf):
19. Original parts and components offered by the OFM as standard equipment,
or as an option, for a specific model handgun on the IPSC approved
handgun list are permitted, subject to the following:
19.1. Modifications to them, other than minor detailing (the removal of
burrs and/or adjustments unavoidably required in order to fit
replacement OFM parts or components, and/or identifying marks
which add or remove negligible weight to/from magazines), are
prohibited. Other prohibited modifications include those which
facilitate faster reloading (e.g. flared, enlarged and/or add-on
magwells, etc.) changing the original color and/or finish of a
handgun, and/or adding stripes or other embellishments.
So, polishing and de-burring is allowed, the way I read it.
Here is from IPSC rules book, page 79 (http://www.ipsc.org/pdf/RulesHandgun.pdf):
19. Original parts and components offered by the OFM as standard equipment,
or as an option, for a specific model handgun on the IPSC approved
handgun list are permitted, subject to the following:
19.1. Modifications to them, other than minor detailing (the removal of
burrs and/or adjustments unavoidably required in order to fit
replacement OFM parts or components, and/or identifying marks
which add or remove negligible weight to/from magazines), are
prohibited. Other prohibited modifications include those which
facilitate faster reloading (e.g. flared, enlarged and/or add-on
magwells, etc.) changing the original color and/or finish of a
handgun, and/or adding stripes or other embellishments.
So, polishing and de-burring is allowed, the way I read it.
Just took a few pictures with the slide off. First pic is mag in with bullet in proper place.
Second is Bullet moved froward a little bit.
Third is a factory Shadow slide stop(left) and a new style CZ custom slide stop to compare.
I have not modified mine because i haven't had any problems, but it shouldn't take more that a few file strokes. I polished the bottom of my slide, not sure if it helps or not.
Second is Bullet moved froward a little bit.
Third is a factory Shadow slide stop(left) and a new style CZ custom slide stop to compare.
I have not modified mine because i haven't had any problems, but it shouldn't take more that a few file strokes. I polished the bottom of my slide, not sure if it helps or not.
I was trying to say that round in top position in mag should ride over slide stop and into the feed ramp; but NEXT round MAY come in contact with slide stop with its bullet thus pushing slide stop into lock position WHEN top round is stripped and round is either long or bullet's nose is 'fat'.
It'd push the stop from below it and lock slide open.
It'd push the stop from below it and lock slide open.
If it happens with any mag as OP stated, then I think the most logical thing to suspect is the gun. If that long strip on underside the slide is somewhat rough or tight, it may drag next and top round forward when slide moves forward along with it. It should not happen with mag inserted and then immediatly dropped, but only after top round is chambered and next one dragged forward. I had same issue on rare ocasion too and resolved it by polishing the area in question and using +10% mag springs. Stronger spring allows for rounds to be firmly pushed against mag lips and even when the lips are polished, the round doesn't move forward.
CZs and Shadow in particular are not always trouble-free, but if you take time to understand them (and other guns too) you can easily make it one of the best guns out there.
What I also polished on my guns, if one is interested, is chamber and feed ramp. Yes, whole chamber
CZs and Shadow in particular are not always trouble-free, but if you take time to understand them (and other guns too) you can easily make it one of the best guns out there.
What I also polished on my guns, if one is interested, is chamber and feed ramp. Yes, whole chamber
Really good points guys, thanks. I did polish the underside of the slide, and removed the sharp edge at the bottom of the breechface; so far so good when loading the mags up with dummies and chamber 1, hit magrelease- magazine falls. I do this for the full 10 rounds in magazine. Occassionally a round does move forward, but the mag still falls. Won't take anything for granted until I do some live fire testing as thats when you REALLY don't want this happening. Thanks for all the input, I am going to look at the slidestop too, especially where I intend to run heavy bullets eventually and I can see them causing issues too. Thanks!
- Location
- Off the "X"
You shouldn't have to do any polishing, etc. I reiterate my original point regarding your problem (and addendum the indicated possibility of a burr catching the slide - if that worked for you, great!). With regards to the OAL of your rounds being too long and possibly contacting the slide stop on the way up to the top spot in the magazine, that would have different symptoms than you've explained (namely the slide would keep locking back and simply pushing the slide release would rack it forward again).
Change out the main spring to a lighter one (15 lbs) and install a competition hammer and the pistols trigger should be damn near as nice as a 1911's, with a nice light (~7 lbs) consistent double action, and a short single action reset. Then you won't have to worry about inspections.
And to answer your questions, no, my CZ has never been inspected but I'm going to nationals for the first time this year so we'll see if it happens there.
