Feeding issue

[madang55]

CZ457. I have several magazines. 56/10/15 rd. I have some old original steel mags, but the new poly work fine, but........on a couple of the magazines, the last round doesn't feed. It heads straight into the top edge of the chamber. Not happy. Could cost me dearly in a timed comp.

[bladeracer]

CZ457. I have several magazines. 56/10/15 rd. I have some old original steel mags, but the new poly work fine, but........on a couple of the magazines, the last round doesn't feed. It heads straight into the top edge of the chamber. Not happy. Could cost me dearly in a timed comp.

Have you tried ammo with different shaped bullets?
So if the second last round feeds fine from a position laying on top of a cartridge, but the last round doesn't perhaps you can alter the shape of the follower to more closely resemble that last cartridge? Do you need to run the whole mag? Can you load a snapcap as the bottom round and use that as your "follower"? Or glue a snap cap onto the follower as a permanent modification?

[madang55]

Different ammunition. Took a while to settle and confirm what the rifle likes I've cured one by "loosening" the spring. Destroyed one (with a mash hammer). As I watch, the 2nd last round pushes rhe last one fwd slightly and the nose starts pointing upwards before it should. I bent the spring and seems to have worked on that one. We shall see

[JohnV]

In most magazines the top round is held inline by the rounds below it , no matter where the follower pushes on the bottom round but once there is only one round left the magazine follower takes over in aligning the last round . So I would say that the follower is pushing the last round up at an angle rather than feed onto the ramp or into the chamber . Magazine spring systems can be the problem as can the shape of the follower or a spring that is weak and allows the last round to sag and point up . Sometime the front lips of a magazine are bent out too far and need to be crimped in a bit Followers that jamb up can be an issue . I hate magazine fed rifles I only have one a 22 Brno all the others are hinged floor plates which are more reliable . I did have feeding issues with my Mauser 98 action which had a custom follower , took it out and fitted a Mauser 96 follower and it works fine now .
Some magazines are just badly made and impossible to fix .

[allan]

https://www.youtube.com/watch?v=0llNWXC9--U

Common issue with CZ/Lithgow 22LR magazines - Follower angles need a slight adjustment.
If the issue is only with steel mags, also possible that a feed lip(s) may have been bent slightly.

[Wapiti]

On the journey to finally find a Brno/CZ rimfire that was actually as accurate as the myths out there said, plenty of magazine issues have come up and all of them were subtle differences in either the magazine lips or the flimsy bent steel follower, coupled with the wildly different lengths of magazine springs, allowing varying tension.

A further explanation of what JohnV said, when there are a number of cartridges in these mags, the mag spring is under more tension, and the top cartridge is held at the angle the feed lips are bent at.
When only one, sometimes two cartridges are left, the follower has a big influence on how the cartridge is presented to the chamber hole.

A good way to see these issues is to disassemble the mag causing problems completely, and one that is working great. Compare the angles of the follower and the feed lips, comparing one against the other. Don't mix them up!

The steel is very soft, of quite low tensile. It can easily be tweaked with some long nosed pliers. If you put a wrap of electrical tape on the plier jaws, you won't scratch the finish and put burrs on the soft steel that may cause metal shavings. It's that simple, and pretty easy.

If you have this drama with the plastic cheapies, it most likely is the follower. Bent at an angle that presents the cartridges incorrectly. And/or the spring being weak.
Do not be afraid to stretch it out to give it more tension when only one or two cartridges are in the mag.

Farmers have the most dramas with these rifles feeding terribly at the worst moments. Most come from the magazine springs being shortened because they are often stored for years with a full mag, which shortens the cheap quality spring steel and the last 2 cartridges often almost fall out of the mags. Let alone the marginal manufacturing consistency of these rifles, which is why there are such varying feed lips angles in these mags.

[rossfrb]

[quote="Wapiti"]On the journey to finally find a Brno/CZ rimfire that was actually as accurate as the myths out there said,

I went down that rabbit hole.
Sorted by purchasing a Tikka T1x Hunter.
I haven't looked back.
regards

[Wapiti]

Indeed. I suppose if you think way back when all 22 shooters had available was Brno and Stirling's and pretty average Winchesters etc, I'm sure they stood out.

[Finniss]

Bugger...I just ordered a 457. Mainly coz i had a bunch of mags for one. Have found the CZ mags worked well in my norinco but the ISA/Acme to be terrible.

Have poked, prodded, twisted and bent all the bits to fix them. I suppose the red flag is on their site....a list of things to do if they dont feed properly.

[Wapiti]

Get yourself a pea rifle with one of these mags, and you'll never have those dramas again.
10-shot and flush fitting, no gnarly spikey little magazine stabbing you in the back when on the sling either.

[Finniss]

Pains me to say, but I have had 2-3 dud ruger rotaries in recent years. Seems to be slight differences in size. They worked in some rifles not others without a shim. Bloody shame coz a flush fit 10 shot is very handy.

[Wapiti]

Explain to me how you "shim" these magazines, mate. They fix on a centreline within the stock with locating pin at the front and a tapered catch in the centre-rear.
They cannot locate anywhere other than the tapered seats fixed into the stock, which are not adjustable. They are cast steel inserts and bolts moulded into them.
The feed lips are cast, hard stainless and cannot be adjusted either, which isn't needed.
They were originally designed to endure the abusive hard life they'd get in the 10/22's, and suit the pussy-easy life they get in the bolt actions even better.

I collect bolt action 77/22LR's, 17's and 22mags and have seven, and Cat C 22LR and 22mags. As well as two Americans which are tortured around here as expendables, and treated like crap. All use the BX mags. None, whether timber or synthetic stocked, bolt or semi, can be shimmed in the stocks and all function perfectly.

I'd love to know how, in case I ever have any dramas.
Only dramas I've ever had, are the awful "Lucky 13" and other cheapies, with their aluminium and plastic feed lips which start chewing out immediately.

[No1_49er]

Pains me to say, but I have had 2-3 dud ruger rotaries in recent years. Seems to be slight differences in size. They worked in some rifles not others without a shim. Bloody shame coz a flush fit 10 shot is very handy.

Are you referring specifically to Ruger magazines, or a "pirate" copy of?
I have a number of colleagues who have used the pirate version and paid the price with endless problems. Reverted to genuine Ruger - no more problems.

[bladeracer]

Pains me to say, but I have had 2-3 dud ruger rotaries in recent years. Seems to be slight differences in size. They worked in some rifles not others without a shim. Bloody shame coz a flush fit 10 shot is very handy.

I've got one OEM BX10 that can be painful, and the early MDT LSS chassis are too tight sideways for some mags to fit in the well, and too long longitudinally to retain the mags properly. You need to shim them for those chassis but then they won't fit in other rifles.

I started with the Ruger rotaries when I was a kid and I've never loved them. Hard to load and unload, bulky to carry, especially compared to simple single-stack flat mags. I love the BX15's though, non-rotary, they work perfectly, and they're well sized and shaped for handling. The BX15's are still bulky in your pockets.

The Pro-Mag Archangels are also very good, 25rd mags (restricted to 10rd and 15rd when required), but they are large to carry in the field. They have a spring setup in the feed lips that is supposed to help with feeding.

I don't have a mag in the rifle until I'm ready to use it, very easy to lose them that way.

[bladeracer]

Pains me to say, but I have had 2-3 dud ruger rotaries in recent years. Seems to be slight differences in size. They worked in some rifles not others without a shim. Bloody shame coz a flush fit 10 shot is very handy.

Are you referring specifically to Ruger magazines, or a "pirate" copy of?
I have a number of colleagues who have used the pirate version and paid the price with endless problems. Reverted to genuine Ruger - no more problems.

One of my OEM BX10's has this issue.

I only have four non-OEM mags, the Pro-Mag Archangel's and they work very well.

[Finniss]

My issues were genuine ruger mags. 22lr and 22mag.