The Unofficial CZ 452/455/457 Thread

Belt sander to square it up and the lil chainsaw sharpening bits for a dremel were perfect for gunsmithing duties :ROFLMAO: Those tapered stone dremel bits are hard to find around here these days.

Cutting this one down was dangerous. Was the first one I ever cut...and it shot fine..Therefore I'm now an expert LOL
I've started to believe that the crown isnt as important as I used to think it was..

That's awesome.

I love how we just go for it on Rokslide and often find out the persnickety stuff from our traditions often doesn't matter.
 
Cut the American.

The scout barreled action has iron sight stuff attached to it front and rear. You can see with a scope with the front and rear removed but I think you're moving money around on the other scenario and it won't be as good as it can be.

Yeah, this is the right answer. Thanks.
 
Well, my plan for a new 457 American is coming together. The idea for this rifle is to be a fairly sleek hunting rifle for snowshoe hare and ptarmigan.

Parts list:
CZ 457 American (24" bbl)
Trijicon Huron 3-9x40 (duplex)
CZ 11mm dovetail rings
Timney trigger
DIP bolt knob
AB Little Bird

I'm going to have the barrel cut to 16.5" and threaded, but before I do I wanted to see how it shoots in it's factory form. I shot 150 rounds of CCI SV to break in the barrel and get some baseline 10-round groups (below; black dots are 1/4", target was shot at 50 yards). Spoiler alert: The groups were terrible. I tried to stay upbeat as I drove home telling myself "Oh well, it needs some work. You'll get it figured out." I begin inspecting/disassembling the rifle when I get home and immediately notice the rear ring has completely crack through. A little frustrating but also nice to have a "smoking gun" to explain the terrible groups. These were brand new CZ rings that I am pretty sure I installed to 35 in/lbs (CZ says 40 in/lbs). Anyway, the CZ rings seem like junk so I ordered a set of steel Warne rings. When those arrive, I'll start over and see if I can get some baseline groups before cutting the barrel.

Side note: This scope is not a great choice for a .22 given that it has a 100 yard fixed parallax, but I had it on hand so I'm going to try and run it and see how annoying it gets. I'm sure it'll be fine for shooting ptarmigan in the alpine, but shooting rabbits at sub-10 yards in the bushes is probably going to be pretty fuzzy/unfocused looking.

More updates to come.

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For the trigger, I'd check out the Yodave trigger shims/spring kit first unless you already have the Timney.
Its completely transformed the trigger in my 455 American, and it saves money for more ammo or other bits

I have a Timney on my Howa Mini and certainly rate them as a great option.
 
I’ll say that the trigger in factory form is pretty good after adjustment.

Sportsmatch makes rings if the warnes don’t work out.

I’d also recommend getting multiple brands of ammo to try.
And depending on location, the weather may be a factor this time of year as well.
 
For the trigger, I'd check out the Yodave trigger shims/spring kit first unless you already have the Timney.
Its completely transformed the trigger in my 455 American, and it saves money for more ammo or other bits

I have a Timney on my Howa Mini and certainly rate them as a great option.

I have the Timney trigger in my other 457. I like it a lot. I was having trouble adjusting the pre-travel and over-travel to my satisfaction with the factory trigger. The Timney solved that for me, it's very easy to adjust. So with that in mind, I just went ahead and bought a Timney for this new rifle right out of the gate.
 
I’ll say that the trigger in factory form is pretty good after adjustment.

I agree that the factory trigger is very good. I just think the Timney is better. Is it $170 better? No way, but these projects are about having fun for me not saving money.

Sportsmatch makes rings if the warnes don’t work out.

That was my first choice to replace the CZ rings I broke. I want the LT031C (low) Sportsmatch rings but they are out of stock at AoA. The T04C (med) rings are available, but they're even taller than the CZ rings which were already taller than I wanted. I suppose I should email AoA and see if that have an ETA on restocking LT031Cs. Maybe I'm missing some options?

I’d also recommend getting multiple brands of ammo to try.

Buying ammo is a giant PITA where I live. Also, I have a metric shit ton of CCI SV, so that's what this gun is going to shoot whether it likes it or not! I'm not worried, I'm pretty sure I can get it to shoot the CCI SV satisfactorily. Keep in my that this is being put together as a hunting rifle, not for BR or NRL22.
 
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If anyone is running a gen 1 bravo and needs a magwell send me a pm. I have a silent thunder magwell that didn't work on my gen 2. $5 for shipping and it's yours
 
Got this put together yesterday. I’ll go shoot at the indoor range sometime soon and see what the groups look like. Pretty pleased with how it’s turned out so far.

Barrel cut to 16.25”
AB Little Bird
Sportsmatch LT031C rings
Leupold VX-Freedom Rimfire 2-7x

6 lbs 10 oz (6 lbs 14 oz w/ leather LOP pad in pics).

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Sweet looking set up.

I’m currently debating a CZ, or a T1X to use as a trainer. .22 suppressed will be quiet enough to not irritate the neighbors. Leaning Tikka, it can be had in a threaded 16” version, & eventually I can drop it into a VG CF Stocky’s stock, to more closely emulate my 6ARC setup.

Any thoughts as to why you went CZ that could sway me?

Got this put together yesterday.
 
Sweet looking set up.

I’m currently debating a CZ, or a T1X to use as a trainer. .22 suppressed will be quiet enough to not irritate the neighbors. Leaning Tikka, it can be had in a threaded 16” version, & eventually I can drop it into a VG CF Stocky’s stock, to more closely emulate my 6ARC setup.

Any thoughts as to why you went CZ that could sway me?

Great question. I have never owned a T1x, so take the below with a grain of salt.

Pros of the 457:
- Cheap, I got this one for $500 out the door
- 457s have more aftermarket support than T1x
- I already have another 457, so I'm somewhat invested in the "ecosystem" already
- I've heard a fair bit about feeding issues with the T1x; the 457s feed like a dream (I have a single shot sled, 5-rnd mags, 10-rnd mags, 13-rnd mags... they all feed flawlessly)
- 457s have the potential to be just as accurate (if not more) than the T1x (e.g., you can buy Lilja barrels for the 457 and headspacing shims for the bolt).
 
Sweet looking set up.

I’m currently debating a CZ, or a T1X to use as a trainer. .22 suppressed will be quiet enough to not irritate the neighbors. Leaning Tikka, it can be had in a threaded 16” version, & eventually I can drop it into a VG CF Stocky’s stock, to more closely emulate my 6ARC setup.

Any thoughts as to why you went CZ that could sway me?

As someone who owns both, I don’t think you will go wrong with either one.

CZ’s are nice rifles, but they have some quirks with the lineup. I’ve written on it at length over at RFC, but the long and the short of it is that none of their models is perfect. All required adjustments to make them how I wanted.

My Royal is a nice rifle. It seemed like the perfect rifle for me. 16” sporter barrel, nice stock, etc. but it has 1/2x20 instead of 1/2x28 threads. I had bad experiences with the adapter for that. I like using it for squirrels with a Banish 22. But once I get a better stock for my T1X, I’ll probably sell this rifle.

The Scout I got for my daughter is also nice. But the included iron sights are garbage and the sight mounts are not compatible with any of the better sights they offer. I picked up a cheap, but nice, American stock for her to grow into. If you watch the classifieds at RFC, you can find anything you want and many things you didn’t know you wanted.

The American only comes with a 20” barrel. And only the synthetic stock version comes threaded. I got one of these on a super sale a couple of years ago. The synthetic stock is actually pretty good. That rifle, however, was basically unpolished on the bottom of the bolt. I know it wouldn’t have taken that long to finish it, but it offended me that it shipped like that. A CZ fan I know admits that he has encountered this on about half of his CZs. I ended up selling the action and the barrel for considerably more than I spent on the initial rifle. I’m keeping the stock as another option for my daughter’s Scout.

I’ve only had my T1X in hand for about a month. I had one magazine issue in the first 50 rounds, but zero issues in the subsequent 950 rounds. In that case, I am pretty sure I loaded it too hastily. From a handling and loading perspective, I vastly prefer the T1X magazines over the CZ ones.

My CZs might be a trifle more accurate, but all three shoot well enough for squirrel headshots at 50 yards with cheap ammo.
 
The American only comes with a 20” barrel.

I believe the only barrel option for the American is unthread 24" bbl, not a 20" bbl.

While going to the CZ website to confirm the above, I saw all sorts of new options I wasn't aware of.

- new adjustable front and rear open sights
- new "flyweight" target trigger
- new Target and Hunter Veil models

That rifle, however, was basically unpolished on the bottom of the bolt. I know it wouldn’t have taken that long to finish it, but it offended me that it shipped like that.

You are not wrong here. The fit and finish between the 457 and T1x is not the same, and the 457 bolts are rough as guts from the factory. You could literally cut yourself on the sharp edges on the bolts and they sound like a zipper. That said, 15-20 min of work smooths them out considerably. I start with a medium grit stone, hitting all the sharp edges and flats on the bottom of the bolt, then I go to popsicle sticks wrapped in sand paper (240 > 600 > 1000 > 1500 > 2000 grit), then I finish with a Dremel, felt wheel, and jewelers rouge. Sounds involved, but it's not. I'm going real fast and sloppy, like each sandpaper grit is 30-60 sec of work before I switch to the next one.

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https://www.czfirearms.com/en-us/products/rimfire-rifles/cz-457-series/cz-457-target

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https://www.czfirearms.com/en-us/products/rimfire-rifles/cz-457-series/cz-457-hunter-veil

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I believe the only barrel option for the American is unthread 24" bbl, not a 20" bbl.

While going to the CZ website to confirm the above, I saw all sorts of new options I wasn't aware of.

- new adjustable front and rear open sights
- new "flyweight" target trigger
- new Target and Hunter Veil models



You are not wrong here. The fit and finish between the 457 and T1x is not the same, and the 457 bolts are rough as guts from the factory. You could literally cut yourself on the sharp edges on the bolts and they sound like a zipper. That said, 15-20 min of work smooths them out considerably. I start with a medium grit stone, hitting all the sharp edges and flats on the bottom of the bolt, then I go to popsicle sticks wrapped in sand paper (240 > 600 > 1000 > 1500 > 2000 grit), then I finish with a Dremel, felt wheel, and jewelers rouge. Sounds involved, but it's not. I'm going real fast and sloppy, like each sandpaper grit is 30-60 sec of work before I switch to the next one.

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https://www.czfirearms.com/en-us/products/rimfire-rifles/cz-457-series/cz-457-target

View attachment 1035307

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https://www.czfirearms.com/en-us/products/rimfire-rifles/cz-457-series/cz-457-hunter-veil

View attachment 1035308

I had the American SR - it came with a 20” threaded barrel.

My opinion is that the only reason to have a long barrel on a .22 is to have a longer sight radius. Apart from that, there are very few good reasons to have more than 16” or 18” of barrel length. But… the hilarity value of owning a Jaguar with a suppressor on it is very high.
 
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