Hi, new poster, 527 Carbine sight parts

[painter]

Here's a pic of my mag parts...I couldn't tell in your vid if the spring has loops on both ends or not.



My follower will rise at the front, but not like yours.

[CardiacColt68]

Great little rifle.  Does that 3.5-10 seem a little big on it to you?  If you are using it for short distances or a woods gun a smaller scope may make it handle and balance better.  I had a 2-7x33 on mine a while, but just switched to a 1.75-6x32 VX3i.  With a smaller objective lens you might be able to mount it lower and get a better check weld.  Enjoy it but be careful.  The CZ rifles tend to multiply in safes. 


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[SteelHorseCowboy]

Here's a pic of my mag parts...I couldn't tell in your vid if the spring has loops on both ends or not.



My follower will rise at the front, but not like yours.

Edited: yours looks like it has a slight bend to both ends, mine does not. From 0:48-1:08 Where I'm showing the spring, I point out the end under the follower first, then the end with the little crook to it. I'll post up some pics, gimme 5 minutes or so.

Great little rifle.  Does that 3.5-10 seem a little big on it to you?  If you are using it for short distances or a woods gun a smaller scope may make it handle and balance better.  I had a 2-7x33 on mine a while, but just switched to a 1.75-6x32 VX3i.  With a smaller objective lens you might be able to mount it lower and get a better check weld.  Enjoy it but be careful.  The CZ rifles tend to multiply in safes. 


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Yeah, it seems a bit much, but I like it. With the power set around 6X or so, it works great for me. A bit more magnification than the 4X scopes I have, one a cheapo Simmons on my Marlin 60 and the other a Weaver Classic 400 I found in a junk store for $10. The Weaver isn't mounted to anything yet. I'm going to swap it with the Simmons on my 22 to check it out. I'll keep whichever I like better and pass the other to my youngest for his 22. I do know that neither of them belong on this rifle.

When I crank this Leupold up to 10.5, I can see the individual bullet strikes very clearly. That's nice, I don't have to set the rifle down and go stand in the (short) line behind the range's spotting scopes. It's just frustrating to me trying to shoot with that much magnification because the picture seems too shaky. My heartbeat made it look like there was an earthquake going on downrange, and heaven forbid I actually have to make an adjustment to my position and then find my target again!

I hope they do multiply! I'd like to have one of these sweet little carbines for each member of the family!

[SteelHorseCowboy]

Here we go.

In order exactly as it's assembled


Two pics of the follower end


Two of the floor plate end


I hope that helps.

[SteelHorseCowboy]

Painter, yours also kinda looks like a different type of steel to me. Seems brighter.

[painter]

My spring is very different from yours. My rifle dates back to '04-'05...I don't remember. Besides being shinier, it looks like the wire is heavier gauge and there are fewer coils. Like you say, mine is bent at both ends.

It appears you have the spring installed as pictured in the online manual...but it isn't working.

If I were you I'd flip the spring front to back so the spring contacts the back of the follower and see what happens.

[SteelHorseCowboy]

Of all things I was sitting here writing my girlfriend a freaking love letter. Yeah, sometimes I'm sappy like that, she's a special lady. Yesterday was her birthday, and going to the range was her request. Thinking of that while writing this letter made my mind wander back to this issue.

And the whole reason I logged back on just now (I finished the letter first), is because that exact same thing just clicked in my head.

I'm at the house now and happen to have some loose rounds sitting on my desk. I'm going to tinker and experiment a bit, go every which way I can with this spring and see if I can resolve this issue.

Reckon there's a chance the previous owner may have stuck a spring in from something else?

[SteelHorseCowboy]

Well, no dice. The way the follower is shaped, the spring won't fit backwards.
I tried swapping ends around, put the bent end under the follower. That made the issue much worse, the follower actually flew out of the mag when I tried to load the first round and if the spring hadn't hung on the feed lips it might have slapped me in the face.

Then I pulled the spring out, gave it a good stretch, and put it back in the way it was before, with the straight end under the follower. That did make the spring feel more substantial, obviously, but did nothing for the tilting follower.

Frustrating.

[Netpackrat]

My 527 had all kinds of feeding problems from new....  Turned out to be the magazine that came with the gun.  I bought a replacement magazine, which cured the feeding problems.  They were both CZ factory mags but the springs were very different.  All of the other parts seemed identical.  All of my shooting stuff is packed up for a move, otherwise I would take the bad mag apart to compare with your pics.  I meant to send it back to CZ to see if they would replace it, but have never gotten around to it.  I bought another replacement mag, so at least I now have 2 working mags.  It's too bad the 527s have so many annoying issues since they are nice rifles otherwise.

[SteelHorseCowboy]

Here's a visual on what's happening inside the mag while loaded.



I think the biggest issue is, this straight walled box mag is just a poor application for this cartridge. The taper between the base and shoulder of the casing is far more pronounced than most other centerfire cartridges, such as .223, .308, .30-06 and such.

A .223/5.56 can reliably feed from a straight 20 round box magazine, as well as the other two American cartridges I mentioned.
But, after about 3 hours of googling last night, I'm getting the impression that CZ may be the only ones in the world who make a straight mag for this round, even in the lowest capacities and single stack.

This problem seems to be fixable with different springs, that seems to be the only difference I've found between the ones that work and the ones that don't, but I think the root issue here is that this round just needs a curved magazine. The bases of the rounds should be flat against the rear of the magazine, and the follower should be riding straight at any given point within the magazine. That's a bit impossible for a straight box with the way the 7.62x39 is designed.

[SteelHorseCowboy]

Y'all gonna learn something bout me. I'm a tinkerer. I'll forgo "just go buy" a $2 part and instead spend hours of free time experimenting on things. Because I want to KNOW, I want to DO. What satisfaction is there in just buying something? To top that off, I'm picky as hell. Creating or modifying satisfies me more than buying and tolerating.

Paper mockup of a possible follower fab, in relation to 5 rounds, and oh my... how bout that groove in the mag body? That could be useful!



I have a new project! Woohoo! Good thing too, I was starting to get bored!

I'm also keeping in the back of my mind... 10 round, single stack AK mags. Polymer will be easier to modify. This tickles regions of my mind.

[SteelHorseCowboy]

Made an experimental follower out of... a lard bucket. Yes, lard bucket.
No it didn't work. But it wasn't intended to, it provided the feedback I need to take another step.

[SteelHorseCowboy]

Lol... I screwed up.

Decided to put the toys away and get some of the work done that I actually get paid for. Dropped the factory follower and then stepped on it when I turned around to see where it bounced off to.

It's alright though. I have a follower I've made out of aluminum. Needs quite a bit more tuning but I should be able to get it up and running this evening, and was planning on having 2-3 mags on hand anyway.

[armoredman]

My buddy LAGS did his creative thing with two old 527M mag bodies and built me the only 10 round mag for this little rifle. It's UGLY...but it's a prototype that works 100% of the time. He said he's going to build a real curved mag for either 15 or 20 rounds, waiting to see.
Methinks your feed lips are too wide, might need a squeeze - the follower should never jump out, no matter what the spring is doing. Also, CZ does carry these magazines in stock - I have several, because I like extra loaded mags if I am out hunting, etc.

[SteelHorseCowboy]

You may have a point there with the feed lips.

Speaking of higher cap mags, I'm considering trying to modify a single stack AK mag to fit it. I've never actually even seen one in real life though, but they're only about $10 or so, usually a bit less. It's worth the try!
I also figure if it were easy, someone else woulda done it by now. So, we'll see.