Curious issue.

[Luisyamaha]

I'll try to make this short. I have a CZ-455. I have four factory magazines for said rifle. All 5-shot. One is metal (came with the rifle) and the other three are polymer (plastic) but are also CZ made.
When shooting ELEY Benchrest Precision .22 LR ammo the first cartridge off the metal magazine does not feed well. Half the time it takes manipulation of the bolt and/or picking it out with a fingernail. All others (4) feed well from the magazine. All other ammo ever tried feed well from this magazine. ALL ammo ever tried feeds well out of the plastic magazines. Only issue is the first round of ELEY out of the metal magazine.

ELEY Benchrest Precision is the only ELEY ammo I have, so I don't know if it would happen with different ELEY ammo.

It is not a big deal, but I do find it kinda weird. Ideas?

Luisyamaha

 

[Eagle1899]

Grab a caliper. Measure the rim diameter and compare it to other ammo that's not Eley.

 

[Dkk37058]

I have the same trouble with my Vudoo but it’s a 10 shot polymer magazine but it only did it with the first round coming out the rest feed fine .
I got in touch with the people at Vudoo and they told me to tap the bottom of magazine before I insert it I did and it works fine seems to settle the cartridges in the magazine for feeding. Customer service at Vudoo is top of the line I’m glad I purchased one . You my try this .

 

[WileyG]

Magazine spring may be in backwards. Pull the floor plate on a polymer mag and the steel mag and verify the orientation of the spring. There are some old threads on this over on rimfirecentral.com

 

[Luisyamaha]

Measured the rims. ELEY .268", pretty consistent. Aguila .270", pretty consistent. Federal 711B, 270" -272", up to .002" variances between them. Measured 10 of each.

I'll check the spring, but, again, it only happens with the first Eley cartridge.

Luisyamaha

 

[Schutzen2]

Also check the direction of the follower. I ordered two 10 round plastic cz mags and the followers were installed opposite of each other. Just look at the ones that work and make sure it's the same.

 

[Luisyamaha]

Took out the springs, and, as far as I could tell they were both the same. Checked the followers, also the same. Look at loaded magazines with a magnifier, both looked the same with either ammo in them.
Next time at the range I'll be particularly concerned if there is any play when inserted in the rifle one vs. the others, but as to why that would make a difference ONLY with the ELEY ammo and not with the rest is beyond me. Maybe seating the magazine a bit more forcefully/carefully will eliminate the issue.
Will report what happens.

Luisyamaha

 

[Knotwild]

I have had 22lr magazines push the nose of the top round down for some reason. When I reload a mag I use my fingernail to pull back on the rim till the nose rises. It seems like the spring pressure is raised because it is fully compressed. For the most part I prefer 10rd magazines anyway because they are so much easier to insert and pull out.

I have also had this problem on a Remington 600 in 222. But turning the spring around pretty much fixed it.

 

[drover]

One is metal (came with the rifle) and the other three are polymer (plastic) but are also CZ made.
When shooting ELEY Benchrest Precision .22 LR ammo the first cartridge off the metal magazine does not feed well. Half the time it takes manipulation of the bolt and/or picking it out with a fingernail. All others (4) feed well from the magazine. All other ammo ever tried feed well from this magazine. ALL ammo ever tried feeds well out of the plastic magazines. Only issue is the first round of ELEY out of the metal magazine.

ELEY Benchrest Precision is the only ELEY ammo I have, so I don't know if it would happen with different ELEY ammo.

It is not a big deal, but I do find it kinda weird. Ideas?

Luisyamaha

Everything points to a problem with the metal magazine. There is likely just enough difference in the Ely nose shape and the lips on the metal magazine being slightly out of adjustment that it is causing the first round to feed slightly different.

The easy answer is to just use the polymer magazines with the Ely ammo.

I prefer the polymer mags, they seem to feed smoother than the metal ones and there is no worry about the lips going out of adjustment if they are dropped.

drover

 

[tball65]

Yamaha, did you notice any accuracy difference between the metal and polymer magazines. I have the same issue your having with metal first round feed as well as the first round flying outside the 10 ring. After that all is well. My polymers feed fine and throws a lot less flyers. Same ammo same lot. ELEY & Center x.

 

[Luisyamaha]

I've been having trouble posting.

Luisyamaha

 

[Luisyamaha]

Tball65: no, there is no discernible difference in groups between the metal or plastic magazines. With neither ELEY nor Aguila, nor any other.
Today I shot some groups, and tried " jiggling" in the metal mag to no effect. Tried loading only 4 rounds instead of 5 and got 50% success rate. Half of the first (of 4) cartridges fed OK. So, I'm guessing now there must be some minute difference in the magazine exacerbated by the additional spring pressure with the fifth round.
Enough of this. It is a known quantity and I can work around it.

Just for kicks I decided to try and shave off some lead off the nose of 5 Aguila bullets. A shaved enough with my swiss army knife for it to be noticeable, maybe 5% of the lead, off to one side, not the tip. Should really get off balance when spinning. That group was 1.150" vs. .684" for unmodified ammo. Heck, I expected 6" groups or so.! I've had unaltered ammo do worse than that! Maybe next time I'll try and shave off more.

It's been an interesting conversation. Thanks,

Luisyamaha

 

[tball65]

That’s crazy. We spend 20+ per box for ammo to shoot tight groups and you take some Aguila and hit it with a pocket knife and it shoots a little over an inch group.

Yeah it’s been fun. Let me know if and when you figure it out On the mag. I’m still seeing inconsistent groups between metal and polymer.

 

[CJ6]

Have you tried different speeds cycling the bolt

 

[tball65]

No my normal firing pace is about 3 seconds between shots. I am shooting a match in the morning so will have to see what difference that makes on Sunday. Thanks

 

[MUP]

No my normal firing pace is about 3 seconds between shots. I am shooting a match in the morning so will have to see what difference that makes on Sunday. Thanks

Good luck, and definitely post your results!

 

[Dgd6mm]

My wife's CZ457 is having a feeding issue with the 5 round poly mag on the last round. I read this thread in hopes of learning something about her 5 round mag issue. I did learn a few things from this thread, which is always a plus. I think I'll take her mag apart and check it out.

 

[tball65]

Have you tried different speeds cycling the bolt

Ok, Sunday I shot the 3 best grouping ammo lots in my CZ 457. I ran them over a session of (3) 5 shot groups in metal mags first then polymer mags last. Slow cycling of the bolt certainly fixed my issue on Sunday, but tomorrow is a different day. In my opinion the friction of the metal against brass could have possibly caused a bit of misfeeding into the chamber which is a MTR. This could have created the projectile not being concentric when coming in contact with the rifling which could have been the cause of the accuracy difference between the metal and polymer mags. I have pics I will post later. I will go deeper into the rabbit hole once the weather permits.

 

[Luisyamaha]

So which shot better, the metal or the plastic?

Luisyamaha

 

[shoot4fun]

I'll try to make this short. I have a CZ-455. I have four factory magazines for said rifle. All 5-shot. One is metal (came with the rifle) and the other three are polymer (plastic) but are also CZ made.
When shooting ELEY Benchrest Precision .22 LR ammo the first cartridge off the metal magazine does not feed well. Half the time it takes manipulation of the bolt and/or picking it out with a fingernail. All others (4) feed well from the magazine. All other ammo ever tried feed well from this magazine. ALL ammo ever tried feeds well out of the plastic magazines. Only issue is the first round of ELEY out of the metal magazine.

ELEY Benchrest Precision is the only ELEY ammo I have, so I don't know if it would happen with different ELEY ammo.

It is not a big deal, but I do find it kinda weird. Ideas?

Luisyamaha

The first round to feed is the last round to be loaded into the magazine.
The spring tension may be causing you to use more force to get the 5th round in there.
With metal mags especially I find it important to make sure the rims are not overlapping.
In other words the rim of the next round going in the magazine should stop at the front of the rim on the previous.
Try loading only four rounds in the metal magazine and see what happens.