CZ 527 accuracy - what is your best and what is you recipe?

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Gun123

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The CZ 527 is a fun rifle, but I have not yet found an accurate load. I have also fired factory ammo such as PPU 123g SP, Norinco 123g fmj, Barnual 123g SP and Barnaul 123g fmj. Accuracy ranged from 1 - 3 moa.

For hand loads, I have experimented with IMR 4198 and CFE-BLK with Hornady 123g SST, Hornady 123g SP and Speer Hot-Cor 150g SP (.311). None of the loads so far has yielded consistent accuracy. Lack of consistency has been my problem. A load that got me .3moa one day would see wild groups the next trip to the range.

What have been your experiences with this rifle?
 
I had mine out last weekend and funny you mention wandering groups. The tail end of shooting for the day and I had the same thing happen. I found it curious and chalked it up to the cold ish weather (-10), frozen ammo and a heating barrel. When I got home and cleaned it I noticed the action screw and the trigger guard screw had both come loose. Enough the stock and barrelled action did have play between the two. Something to keep an eye on but I should lock-tite them
 
My action screws are real tight. I torqued the front to 45 inch pounds and the rear 35. At this point, I am not sure if it's the rifle or the 7.62x39 caliber.

Based on what you guys have said, it appears 1.5 to 2 moa are normal for CZ 527. I have to say I am disappointed in the rifle.

Could it be the cold weather and the wind gusts? At 100 yards, could the wind drift have such impact on accuracy?
 
DTM5 said:
See a previous post of mine which evaluated the accuracy retention of QD rings.
https://www.canadiangunnutz.com/for...283-Range-Report-CZ-527-QD-Ring-functionality
I was testing with Federal Power Shok.
For a thorough reference on 7.62x39 ammo options, see https://www.recoilweb.com/7-62x39-ammo-test-101531.html
With that much inter-session variation, I'd defintely look at your optic setup as a potential culprit.
Click to expand...

I have the Warne QD rings and Leupold 2-7x33 on my rifle. Thanks for the link to the article on the 7.62x39 tests. The findings in that article were the same as mine. My best 4 shot group was .3MOA, but I was not able to get sub moa groups consistently, not like my other rifles with chamberings, like 308 and 3006.
 
https://i.postimg.cc/6QQ9gjv3/20220316-154653.jpg


Made a trip to the range today, to try again a load that the CZ 527 seemed to like - IMR 4198 24.6g and Hornady 123g SST. For reference, I shot my Win Model 70 featherweight compact in 308, which usually shot one moa or less.

My model 70 shot 1.38moa. Its windy at the range today.

I shot 3 groups with the CZ 527. The first group was 1.47moa, second was 1.84, and the third was 0.48.

I believe that on a good day, the CZ 527 is a moa gun. I have decided the CZ 527 in 7.62x39 is an accurate rifle. It can not and should not be expected to shoot like a target rifle with heavy barrels.
 
I tried the set trigger. It was so light that a touch on the trigger, the gun would shoot off. I didn't find using the set trigger yielded better accuracy. I find that the regular trigger is nice enough.
 
2-3 with cheap non corrosive steel case

1-2.5 with factory ammo, really good results with privi fmj.

Using a peep, always use the set trigger. Took a lot of practice to get to this level with a peep sight

1.5 with factory irons would be quite the group…


Don’t forget on the internet guys always list the best group they have shot. If using irons try a larger square shaped aiming point for repeatability. In my experience will vary much more than a scope, form and repeatable hold are much more important. We all have off days


I’ll be the contrarian I really like the set trigger and it is one of my favourite guns I have ever owned, very rarely gets shot at paper, the only time I bench it is messing around shooting at distances past 200
 
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1-1.25 5-shot groups @ 100m with Barnaul HP. But I'm also having a hard time developing a load for it, it keeps printing patterns with handloads so far.. may be I should just stick to steel cased factory ammo
 
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