CZ527 carbine 7.62x39

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Re: CZ527 carbine 7.62x39

Post by duncan61 » 10 Jul 2017, 6:56 pm

I remember doing all this for my rifles.222 .243 and 7mm Rem Mag.I have standard loads now its worth the effort to know your rounds are on point.Love your work its what this forum is all about
.22 winchester .22hornet .222 .243 7mm rem mag cbc 12g
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Re: CZ527 carbine 7.62x39

Post by Gwion » 11 Jul 2017, 6:26 am

Hard to say. What range are those groups shot at?
Maybe try 3x5 each of 2nd from left top and 3rdfrom left bottom (on my phone hard to read charge weights).
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Re: CZ527 carbine 7.62x39

Post by SHV » 26 Jul 2017, 10:40 pm

the best factory ammo 5 shot(indoor 50 meters), S&B ammo is good but different batch performs different, the plastic divider in the ammo box white color batch is much better than the green color ones

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Re: CZ527 carbine 7.62x39

Post by SHV » 26 Jul 2017, 10:49 pm

TB load, 10.0---9.6---9.2---8.8---8.4--8.1, at max load it spreads a lot, getting better at 8.1, seems nearly there, next time try 7.9---7.7---7.5 each 5 shot to find out, the good thing is POI didn't change too much compares to factory ammo

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Re: CZ527 carbine 7.62x39

Post by MickW » 28 Jul 2017, 8:12 pm

No1Mk3 wrote:Dear MickW,
I am sorry to hear your vacillation regarding 30/30 lever or 7.62x39 bolt is causing hardship, so may I offer a way to ease your suffering that I have used for many years? Find a quiet spot near your gunsafe, assume the Lotus Position, close your eyes and repeat, "I can have BOTH...I can have BOTH...I can have BOTH" before you know it, you will be at peace.


Cheers Mk3 its worked. The Howa Mini is ready for pickup tomorrow. :drinks:
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Re: CZ527 carbine 7.62x39

Post by duncan61 » 29 Jul 2017, 12:20 am

Did you read Elmers post on sorting runout on factory ammo
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Re: CZ527 carbine 7.62x39

Post by SHV » 10 Aug 2017, 12:20 am

Trail Boss test

7.9gr, 7.7 gr and 7.5 gr

seems 7.7 is good but got one fly and it's far away from the main group cluster :oops: next time will try 10 x to find out if it's the best

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Re: CZ527 carbine 7.62x39

Post by in2anity » 10 Aug 2017, 12:21 pm

Nice SHV - remember TB isn't renowned for it's pinpoint accuracy. It's advantage comes from its economy and less wear-and-tear on your rifle.
At what point does lack of maintenance become patina?
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Re: CZ527 carbine 7.62x39

Post by Gwion » 10 Aug 2017, 2:42 pm

Not sure what primers are used in that cartridge but I definitely found that using Small Rifle MAGNUM primers for Trail Boss in my 223 improved consistent velocity as well as precision and group size. In fact, I literally just finished priming 50 cases with SRM primers for a fresh batch of TB 223rem.
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Re: CZ527 carbine 7.62x39

Post by SHV » 10 Aug 2017, 4:03 pm

in2anity wrote:Nice SHV - remember TB isn't renowned for it's pinpoint accuracy. It's advantage comes from its economy and less wear-and-tear on your rifle.


reasonable accuracy will be ok, it is fun to shoot
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Re: CZ527 carbine 7.62x39

Post by SHV » 10 Aug 2017, 4:06 pm

Gwion wrote:Not sure what primers are used in that cartridge but I definitely found that using Small Rifle MAGNUM primers for Trail Boss in my 223 improved consistent velocity as well as precision and group size. In fact, I literally just finished priming 50 cases with SRM primers for a fresh batch of TB 223rem.


is there large rifle magnum primer you can buy for LGS? also do you need to enlarge the hole on the case?
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Re: CZ527 carbine 7.62x39

Post by Gwion » 10 Aug 2017, 5:33 pm

No you don't have to enlarge anything. A quick web search will tell you what primers are available.
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Re: CZ527 carbine 7.62x39

Post by in2anity » 10 Aug 2017, 7:27 pm

SHV wrote:
in2anity wrote:Nice SHV - remember TB isn't renowned for it's pinpoint accuracy. It's advantage comes from its economy and less wear-and-tear on your rifle.


reasonable accuracy will be ok, it is fun to shoot


Next step is to try and send some lead through her - do you know if she'll stabilize a 180gr?
At what point does lack of maintenance become patina?
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Re: CZ527 carbine 7.62x39

Post by SHV » 18 Aug 2017, 5:25 pm

in2anity wrote:
SHV wrote:
in2anity wrote:Nice SHV - remember TB isn't renowned for it's pinpoint accuracy. It's advantage comes from its economy and less wear-and-tear on your rifle.


reasonable accuracy will be ok, it is fun to shoot


Next step is to try and send some lead through her - do you know if she'll stabilize a 180gr?


easy to clean the barrel after shoot the lead cast bullet?

got magnum primer to try 7.7 gr trail boss next time :lol:

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Re: CZ527 carbine 7.62x39

Post by SHV » 18 Aug 2017, 5:26 pm

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Re: CZ527 carbine 7.62x39

Post by SHV » 18 Aug 2017, 5:27 pm

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Re: CZ527 carbine 7.62x39

Post by SHV » 18 Aug 2017, 5:28 pm

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Re: CZ527 carbine 7.62x39

Post by SHV » 18 Aug 2017, 5:31 pm

forgot to say last time tried 2x 5 shoot, 7.7 TB with normal primer, first 5 shot is normal, last one is not to bad

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Re: CZ527 carbine 7.62x39

Post by SHV » 24 Aug 2017, 9:54 am

Gwion wrote:No you don't have to enlarge anything. A quick web search will tell you what primers are available.


the magnum primer doesn't help on accuracy, also 3 of 15 didn't fire :crazy: will try it on Sako A7 and tikka battue, maybe is the CZ doesn't strike big and hard enough on the primer
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Re: CZ527 carbine 7.62x39

Post by Gwion » 28 Aug 2017, 10:57 am

Huh.... Interesting! Was worth trying out, I guess. Definitely made a difference in 223 with TB but that is small rifle magnum primers.
Sorry for the bum steer but still, now you have tried it and know the result.
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Re: CZ527 carbine 7.62x39

Post by SHV » 28 Aug 2017, 11:27 am

Gwion wrote:Huh.... Interesting! Was worth trying out, I guess. Definitely made a difference in 223 with TB but that is small rifle magnum primers.
Sorry for the bum steer but still, now you have tried it and know the result.


maybe the 7.62x39 case is short so there isn't much difference, 5.56 and 308 case are much longer so it makes lot difference... will try 10 gr TB subsonic 308 next time :lol:
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Re: CZ527 carbine 7.62x39

Post by Gwion » 28 Aug 2017, 7:00 pm

You might have a pount there, re: case length.
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Re: CZ527 carbine 7.62x39

Post by SHV » 30 Aug 2017, 7:41 pm

Gwion wrote:You might have a pount there, re: case length.

tried TB 10 gr "subsonic" 308, the CCI magnum primer looks much better than the normal big rifle primer :lol: and I am lucky 10 gr TB charge looks good, may no need to try other different charges
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Re: CZ527 carbine 7.62x39

Post by Gwion » 31 Aug 2017, 2:02 am

Nice one.
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Re: CZ527 carbine 7.62x39

Post by Big Trev » 07 Mar 2020, 5:00 pm

For the life of me can’t work out why 303 /311 projectiles are so expensive and in limited weights. The prices almost make you vomit. I have a Howa 7.62x39 varmint and would love to do some experiments with loads but the projectiles are too expensive. I don’t know why no one has sourced someone who is prepared to drop the price. Let’s face it there not made out of gold
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Re: CZ527 carbine 7.62x39

Post by InisBineest » 08 Mar 2020, 1:15 pm

Big Trev wrote:For the life of me can’t work out why 303 /311 projectiles are so expensive and in limited weights. The prices almost make you vomit. I have a Howa 7.62x39 varmint and would love to do some experiments with loads but the projectiles are too expensive. I don’t know why no one has sourced someone who is prepared to drop the price. Let’s face it there not made out of gold


If you have the time, I highly recommend casting your own. ITs a bit to set up, but much much cheaper in the end (if you discount the time spent as job satisfaction;)
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Re: CZ527 carbine 7.62x39

Post by in2anity » 08 Mar 2020, 1:56 pm

InisBineest wrote:If you have the time, I highly recommend casting your own. ITs a bit to set up, but much much cheaper in the end (if you discount the time spent as job satisfaction;)

Or you could buy the 1000 pack for $129 and get better velocities, not to mention save yourself a huge amount of effort... just sayin. Plated bullets are also more accurate in my experience.
At what point does lack of maintenance become patina?
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Re: CZ527 carbine 7.62x39

Post by flutch » 08 Mar 2020, 4:06 pm

SHV wrote:I like short/light rifles :lol:
113112eiejnb4nnxi4e0iz.jpg



been wanting one of these, dunno how I will go getting a 7.62x39 when I have a 270 and 300win whilst living in the police state of WA
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Rossi S/S 410
Lanber U/O 12 gauge
Adler B220PG 12 gauge
Ruger 22lr
Remington 270 win
Howa 223
Weatherby 300 Winmag

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G5 Quest Drive
G5 Prime Defy
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Re: CZ527 carbine 7.62x39

Post by JimTom » 08 Mar 2020, 4:41 pm

As I am Sure you already know, the 7.62x39 is vastly different in ballistics and purpose to that of .270, and 300WM. Is that not justification enough in WA mate?
That was a genuine question too mate, not having a go. I know you blokes have it tough over there in WA justifying ownership but if they can’t see the difference then they are A-Grade faaarkwits.
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Re: CZ527 carbine 7.62x39

Post by JimTom » 08 Mar 2020, 4:45 pm

By the way, the CZ527 in this chambering is an awesome bit of kit. I don’t personally own one however I have had the opportunity to use one on several occasions and for what it’s worth I rate it.
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