ZKK 601 in .308 Range report

[Brithunter]

Hi All,

     Last Sunday I tried a new load in the CZ, it's an older model a ZKK 601 made in 1994, and at the time had the correct dedicated Zeiss-Jena 4x scope in it's one piece mount:-



   Now the scope whilst good for hunting is not the best for precision target shooting due to the heavy Tri Post European reticle. The load I am playing with uses the Speer 150 Grn RN bullet #2017 and Reloader 15 powder with a Rem 9 1/2 primer in a W-W Super case loaded to a col of 2.700".

       Although due to what I believe were aiming errors due to the thick post  out of the 10 shots I fired at the one target I got 3 groups slightly apart from one another the largest is 1" the smallest 1/2" with a total spread of 2 1/2". After the range trip I will scan the targets and post them.

    OH the rifle has the standard factory bedding including a bedded barrel.


I have had the rifle since new and the modifications I have made are making and adding the Barrel band sling mount to hold the std CZ from loop, stripping the varnish off the stock and relieving the wood in a slope at the loading port and applying a traditional Oiled Finish to the stock and of course removing the set trigger for the curved std trigger as I prefer the feel of it.

     So this Sunday I am going back to the range to retry them but this time I have put a 6x42 Deutche scope in Hilver mounts onto the rifle as the scope not only has a bit more magnification but has a normal Duplex reticle which is more precise on targets and we shall see if I get better results. The shooting is done prone using a fore end rest and prone is not a particularly comfortable position for me after suffering whiplash twice now the neck is not as flexible as it once was but we will try the best that we can 

[Brithunter]

Well the weather held off and the load was tested again using the 6x42 scope. It is not as promising as it looked  3 shots were fired for a group, the POI was off but that was not a concern just now it was grouping that concerned me. These three shot made a group of 1 7/8"  Hmm I was not happy but I adjusted the scope and fired three more and got a slightly tighter group of 1 1/2" and two more groups were fired later and the result was the same 1 1/2" groups  . Then I switched targets to at 1" grid Sighting Target and used the 4 corners as aiming points so i could shoot 5 groups on the same target  .


This was the target from last week.

I had put some old loads using 165 grain bullets in the bag and these were tried. The 165 Grn Nosler Balistic Tip made a 5 shot group of 3/4", the 165 grn Spper SP grouped at 1" with 3 shots making one hole. These loads are alos using Reloader 15.


Nos BT. The stray is a 180 Grn Win ST.


Speer SP the low left shot was called as a fellow club member with a darned Muzzle break fired at the same time. I hate Muzzle Breaks 

   I also tried a few rounds of Factory Winchester 180 Grn Silver Tips but my rifle certainly dislikes them and spread them over the target. So This CZ ZKK 601 like a slightly heavier bullet so I will be sticking with them in future  .