Zbroia Kozak FC .22 550/290!

[PNW1985]

So, this is an impressive little Bullpup. It was power tuned by George Airguns. On his website it states max velocity for the 25.39 .22 is 910. He must have done something a little special to this one. Max velocity at the factory reg setting is 945fps. That’s about 50 FPE. I did a little modification to the stock so I can back out the retaining screw for the hammer spring adjuster with the stock on. 930fps with the 15.39, 940fps with the 18.1 and 920fps with the 25.39 with just a few turns of the HSA. All are very accurate at those velocities. I’m impressed.

 

[PNW1985]

From GA Website.

 

[HubenK1Sniper92]

They are definitely well built and performing rifles for the money, I have one and am very impressed with it

 

[survivor45]

The regulator in mine started leaking.
I’ll need to make or buy some extended snap ring pliers to remove the regulator.
I hope it’s just normal O rings in there and not any odd or fancy seals.

 

[PNW1985]

Did Charlie at GA tune it for you?

 

[Thach2264]

those are good numbers, report back with the accuracy and do you happen to know what barrel is in there?

 

[PNW1985]

Accuracy is great. I’ll post groups next time I’m out. Here is a snip from Kozak’s website. Barrels are made by them.

 

[jlopezbarquero]

35 yards
Bad accuracy

 

[MACTEN]

35 yards
Bad accuracy

View attachment 494402

I tend to agree about the Apolo pellets. They can still be melted down though.

 

[Mr.H]

35 yards
Bad accuracy

View attachment 494402

Have you tried any JSB pellets yet? Probably would improve your group size.

 

[jarmstrong]

35 yards
Bad accuracy

View attachment 494402

before you blame the gun,,, try better pellets
like I said in the other post you made,,, my Zbroias prefer 5.52 head size , I like FX brand in 5.52
but all Trenier has in stock right now is the 25 gr 5.52, search out for your self,,, as I know JSB also has some 5.52 out there

.22 | Trenier Airguns

www.trenierairguns.com

 

[TN_Yankee]

35 yards
Bad accuracy

It would be helpful if you responded to the questions & suggestions made to you here & in other posts. This is at least the third time you've posted "bad accuracy" without any indication that you've tried other pellets, cleaned the barrel, checked the crown, tried without the magazine, etc.