First CZ Rifle

Discussion in 'Rifle Country' started by General Geoff, Nov 21, 2021.

  1. ifit

    ifit Member

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    Congrats on your first CZ...Great .22s
    .purchased my first cz in 2008 a cz 452fs, then a 455, and just recently the 457 MTR
    Let us know how it shoots
     
    General Geoff likes this.
  2. jdc1244

    jdc1244 Member

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    The same with my 512 semi-auto with the 16.5 barrel.
     
  3. ahutch71

    ahutch71 Member

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    Love my CZs. Have 527s in .223 and 7.62x39, and recently picked up a 455 with irons and the long 24.8” barrel. I’ve worn out the squirrels down here in TN this fall with it - that is one scary accurate rimfire. I had several 100 yard hits after dialing in with various rounds. The CCI subsonic small game HPs at 1050 fps works wonders.
     
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  4. General Geoff

    General Geoff Member

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    Finally got the new rifle out to the range. Since I don't yet have any fancy match-grade ammo, I had to make due with an abundance of Federal Champion 40gr round nose, rated for 1240 fps. The rifle works OK with it, but the accuracy isn't stellar.

    After about 10 rounds to get it zeroed for 25 yards, I punched these patterns into an M16A1 silhouette paper target.

    20211126153708-6937ab5c-xx.jpg

    20211126153700-52ed61ee.jpg

    Click for full resolution

    At 25 yards, the largest 5 shot group (upper right) was 0.75", with the smallest at 0.41" (upper left).

    I will say, this ballistic calculator app i got Strelok Pro is great. Punch in the numbers and it yields remarkably good doping adjustments.

    20211126153706-101037a0-me.jpg


    Out at 100 yards, the results with this ammo weren't nearly as consistent.

    20211126153705-2f437310-xx.jpg

    Top two silhouette 5-shot groups measure 1.45" (left) and 1.55" (right).

    Middle two groups are both at 2.8".

    Bottom right is 3.0", and the worst group was bottom left at 3.7"

    Honestly I wasn't expecting much better than 3 MOA for cheap bulk ammo so the top two groups were a pleasant surprise. With match grade standard velocity ammunition, hopefully I'll get it down below 1" groups. I know that high velocity bullets tend to reach transonic just after 50 yards which can cause the bullet to destabilize in flight and reduce precision. 1070 fps ammunition should be just barely subsonic at the muzzle and thus avoid destabilizing in flight.

    (please excuse the "meters" caption I wrote on the targets, as my brain was frozen at the range today and was engaged in a conversation with someone else while I was writing. Probably a negligible difference at 25 but at 100, that's a 9 yard/27 foot discrepancy).
     
    Last edited: Nov 26, 2021
    LoonWulf, Spats McGee and bannockburn like this.
  5. LocoGringo

    LocoGringo Member

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    To give you some hope, I got my 457 Varmint back from the gunsmith last Monday and I shot it Tuesday to test ammo and silencer combinations. I cleaned it thoroughly the night before to make sure I started with a clean bore and that there were no bits of metal left in the bore. I shot 5-round groups at 50 yards using just the thread protector that the gunsmith made and blended to the muzzle with an 11 degree target crown, a Dead Air Mask silencer and a TacSol Axiom silencer. The ammo I tested was CCI SV, Norma Tac-22 and Eley Force which all showed promise from the original barrel length of 20.5".

    The first 3 targets fired were using the thread protector and were as follows: 1) the cold bore shot nicked the edge of the center dot and the following 4 shots went into 1 hole about a quarter inch to the right with a distance center to center of .145" measured with my calipers. 2) The next 2 targets were excellent as well with the largest group of 5 being .33" center to center as measured by calipers.

    Interestingly, the suppressors opened up the groups with the exact same ammo from the exact same box. Some other ammo/silencer combos showed promise, but need further testing. Be patient and learn the rifle and I won't be a bit surprised if the groups tighten up after a bit of use and using good ammo.
     
  6. General Geoff

    General Geoff Member

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    Yeah, I have a brick of CCI Standard Velocity on order to try it out with, and I'll be getting some Wolf Match Extra by the end of the year to try as well. I'm guessing the CCI SV will considerably tighten the groups at 100 yards.

    Consistent 0.33" 5-shot groups at 50 yards is 0.63 MOA, which is absolutely phenomenal for any rifle. You have a top 1% rig there, cherish it!
     
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  7. LoonWulf
    • Contributing Member

    LoonWulf Contributing Member

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    Thats a really nice rig! Should be awesome with some more shots down the tube and the suppressor.

    PXL_20211129_043016288.MP_1.jpg

    My stock .22lr barrel for my 457 wasnt great with anything i could get off the shelf here. The LW barrel thats on it now does pretty well tho. Im hoping that going to the proV stock takes some of the user error out also, I shoot them better than the other stocks I tried.
     
    Last edited: Nov 30, 2021
  8. LocoGringo

    LocoGringo Member

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    Thanks, but it's not consistent yet. I've got a long way to go before that's established!

    I do cherish it though.
     
    LoonWulf likes this.
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