452 CZ - worst to best trigger


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rajb123
March 28, 2011, 04:54 PM
I bought a 452 CZ 22WMR rifle recently and it had a poor factory trigger with loads of creep, inconsistent pull and generally a heavy lousy trigger. Apparently, this is a common trait with these rifles.

I bought an adjustible sear from DIP and installed it this weekend. Installing the spring loaded steel ball was a PITA but once it was in, the unit worked great.

The trigger is now crisp, fairly light and consistent.

I own a lot of rifles and this kit changed my rifle from the worst trigger owned to the best. I recommend this product for those who are looking to fix the poor factory trigger for their 452 CZ.

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henschman
March 28, 2011, 05:07 PM
That's strange, my CZ-452 .22 LR has an outstanding factory trigger with no creep, and is the best trigger of any rifle in my arsenal without any mods at all.

Dr T
March 28, 2011, 05:56 PM
My CZ 452 FS has a very nice trigger. I would not have purchased a rifle with the trigger you describe.

Boomie
March 28, 2011, 06:13 PM
I have three different CZ-452s. They all have the same, excellent trigger.

HOOfan_1
March 28, 2011, 06:32 PM
no problem at all with my dad's CZ 452 Ultra Lux

steven58
March 28, 2011, 07:10 PM
My 452 has the 3d finest trigger in my armory.

It's behind the Anschutz and the Timney in my ULA and just ahead of my Savage 12 Accutrigger.

Dulvarian
March 28, 2011, 09:36 PM
I have a 452 V, .22LR, and it is a nice clean trigger. No adjustments. My gunsmith offered a trigger job at a nice price (we get along well, and he's my FFL), but I don't feel the need.

Of the dozen or so people that have fired it, everyone commented on the clean trigger.

Maybe you got one some 'finished' on a Friday at quitting time. I've checked the manuals and diagrams, and there doesn't seem to be a difference in any of the parts for the trigger between the variations of the 452. And, if you just recently purchased it, CZ has discontinued the 452's and 453's and is only making 455's now. (I believe. Someone with more knowledge on the matter feel free to correct me.) You could have gotten one of the last runs on the rifle where they didn't really bother putting 100% into the rifle. Just a thought.

And, every manufacturer out there can make a lemon.

rajb123
March 29, 2011, 04:47 PM
Yeh, I wanted to dry fire the rifle in the store but was not permitted to do it. The next time a store refuses this request, I walk.....

Anyway, the adjustible sear is no big deal. There are a few minor issues with this rifle that I am sorting through one-by-one. So far these include:

1. Adjustible sear (done)
2. Smaller lighter trigger spring (done)
3. Oversized striker/bolt spring (done)
4. Barrel free-float (done)
5. Action bedding - Devcon epoxy (done)
6. Action pillar (done)
7. Adjust magizine to eliminate jamming hollow points (not done)
8. Smooth out the ruff bolt (not done)

Some of these issues like the poor trigger, ruff bolt and jamming mag should have been addressed before this unit left the factory. Others like the free-float, bedding and striker spring are not necessary but nice to have.

Did this one leave the factory on Friday? ....not sure - probably.

Blown6L
March 29, 2011, 05:15 PM
I have a 452 in 22lr and the trigger also leaves a lot to desire. Lotta creep, gritty and heavy. I've read about the DIP kit and plan on installing it in mine someday

rajb123
March 30, 2011, 07:24 AM
I'm kinda surprised with the several comments here that many owners don't have bad triggers on these guns.

Blown6L:
If I were to buy another 452 gun, I would install another DIP adjustible sear ($40) and lighter trigger spring ($12). There are other $15 shim kits that work also. With these, the amount of creep removed is a function of which shim is used and you adjust by trial and error. With the DIP adjustible sear kit, you simply adjust the threaded allen screw until all the creep is gone.

karlb
March 30, 2011, 08:05 AM
My trigger was nothing to write home about until I put in a RT sear with a #144 spring. Now I smile every time I pull that trigger.

rajb123
March 30, 2011, 12:21 PM
There is a post on another rimfire forum that shows that only 15% of CZ 452 owners have stock triggers, so this tells me I am not the unusual case.

CsHoSi
March 30, 2011, 04:17 PM
I had to chime in here. I bought a 452 American left-hand model last fall.

I'm not by any means experienced but the VQ trigger group I bought for my 10/22 spoiled me I guess.

The CZ had some creep and felt a little gritty to me. I was also having problems where 5% of the time working the bolt would not engage the sear so there was no resistance on the trigger when I went to fire. I shoot 100-round sessions and without fail this would happen 5 or 6 times intermittently, every session.

I took it back to the gunsmith shop I bought it from (they do CZ Custom Safari) and got the impression they didn't really know rimfires. They said it had almost no engagement, looked like it had been modified and didn't believe that torquing the action screws to spec had any effect on accuracy.

Anyways, they did fix that problem I believe, since I put 125 rounds through it in one session and had 0% failure. Although, 3 of those shots had no creep but the perception of a heavier trigger pull. They said they stoned it but it feels grittier now, maybe that's just me not shooting it over the winter.

I was thinking of buying the Timney trigger but it requires a little stock modification and have read of some people having problems with it.

I had seen the AS sear, now I took a look at the DIP sear and the price seems more reasonable to throw in vs. the whole trigger group. I see some other goodies I want too, like the aluminum mag well. That trigger guard sure looks nice but I can't justify it yet.

Horsemany
March 30, 2011, 04:23 PM
I also cannot believe all the satisfied 452 owners. The trigger is it's only weakness IMO. There is a reason there are home gunsmiths who sell trigger fix's for the 452.

giggitygiggity
March 30, 2011, 05:50 PM
I still have the factory trigger on my CZ452 Varmint. It hasn't been modified at all. I think it is an excellent trigger.

benzy2
March 30, 2011, 10:21 PM
I have two 452's, a trainer and a Varmint. Both came with a roughly 6lb pull, which adjusted down to around 4lbs in factory trim. The trainer had a bit of creep, the varmint on the other hand was very very crisp. Both were given new springs from Ace Hardware. The varmint sees bench only use and now has a 8-10oz pull. The trainer comes in at 2.5lbs. The trainer also had metal tape wrapped around the front sear pin which shims the sear out. It took a little trial and error, but it cost $3 for the entire role of tape. It now has just a slight bit of creep.

Out of the box, the factory 452 trigger is a bit heavy and the creep varies from one rifle to another. The beauty of the system is that it is very simple in that all it takes is a bit of shimming and a lighter spring to get a very very good pull. The adjustable sears out there are better quality than using the metal tape, but they cost a bit more as well. Others have glued a piece of feeler gauge on the sear to shim the trigger out. Many ways to skin the cat, and most end up with a great result. The 453 trigger gives this adjustability and more out of the box. When adjusted correctly the 453 trigger is about as good as you can get this side of the best Anschutz triggers.

Shimming the sear/replacing the sear is right in line with the basic execution of the 452 line. It has a lot of things going for it but some of the corners were cut to save cost. With minimal effort though these corners can be corrected and you get one heck of a rifle for the money.

teetertotter
April 21, 2011, 10:27 PM
My LH 452 American, .22LR was test shot 5 group at the factory with .50 inches at 50 meters on 11-23-10. I had the local gunsmtih loosen the factory spring to lowest setting which resulted in 2lb 8oz. I have been shooting indoors for the past 3 months and trigger is just fine, clean and crisp. I did go to ACE hardware to buy their #144 spring in case I want to get the trigger down to 2 lbs. min allowable for 2 events I partake in.

We will be going outdoors early May and can't wait to see what I can do off sand bags at 100 meters with this 2-1/2lb trigger. Trigger control is a part of accuracy.

Furncliff
April 22, 2011, 12:18 AM
Let me know if these links do not work for you.

http://www.rimfirecentral.com/forums/showthread.php?t=330293

http://www.youtube.com/watch?v=7oLroeN2ODM&feature=fvwkrel

BrainOnSigs
April 22, 2011, 02:27 AM
I also cannot believe all the satisfied 452 owners. The trigger is it's only weakness IMO. There is a reason there are home gunsmiths who sell trigger fix's for the 452.
I agree....I own 3 CZ452s (and have shot 3 others)....gritty, creep, etc. Dropped an Eric Brook's kit in my 3 and turned them into real shooters..

Ky Larry
April 22, 2011, 10:09 AM
I have 3 CZ-452 .22lr's.All 3 came with crappy factory triggers. All have YoDave trigger kits in them and are now excellent. YMMV.

GunTech
April 22, 2011, 10:42 AM
I have tried a variety of triggers. I've settled on the Rifle Basix and am very happy. Relatively easy to get in and nicely adjustable.

teetertotter
April 22, 2011, 10:52 AM
I guess my NEW 452 American with factory trigger is one in a hundred with NO issues and adjusts down to 2lbs 8oz. Perhaps the factory has improved trigger quality in the past 6 months? Two top class shooters in our league have tried my new CZ and are ones that build their own target rifles. Maybe older built models are not perfect?

Added: My current factory trigger with 500 rounds through it, has a trigger variance pull of 2lb 7oz to 2lbs 9oz and is crisp out of 5 pulls retested 4-19-11. I will be retesting again after 1000+ rounds which will be next month for additional break-in time.

I would imagine the new 455's will be more to your liking for those who claim bad triggers, etc.... in the 452's? I'm scratching my head.

jerkface11
April 22, 2011, 11:27 AM
I've shot several 452's all had good triggers.

rodregier
April 22, 2011, 02:07 PM
CZ 452 Silhouette purchased in 2008. I bought a trigger upgrade kit on spec, but haven't felt the need to install yet.

teetertotter
December 24, 2011, 01:15 PM
I just replaced the spring with a #143 as the #144 would not reach 2lbs and more. I had to cut the #143 [.40cents] a little shorter than the factory spring and is now 2lbs 1/2 oz. The 143 is a little stiffer than the 144. The 144 spring with lowest setting was 1lb 1oz and with washers it got up to 1lb to 8oz max. Springs are at Ace or True Value.
I torqued the screws holding the barrel to 25 inch lbs, which is factory spec. I still have room to increase poundage on the trigger pull weight or lighten up. I needed to get min 2lb trigger and this is what I did.

JohnBT
December 24, 2011, 04:04 PM
"has a trigger variance pull of 2lb 7oz to 2lbs 9oz"

That's the sort of thing that had so many people working on their triggers. I don't like them varying that much.

From my years of active membership at RFC I thought every CZ rimfire owner worked on their triggers. The factory triggers I've tried were passable and certainly usable, but not clean, crisp and consistent. I bought a Brooks kit for my WMR American back when he first started selling them and it made a big difference. It was still not like a Cooper or Jewell trigger, but really nice.

RNB65
December 24, 2011, 07:31 PM
My 452 trigger was heavy with noticeable creep until I installed an Eric Brooks trigger kit on it. Now it breaks cleanly at 2 lbs with no creep. It's perfect.

teetertotter
December 24, 2011, 08:58 PM
My factory trigger was clean and crisp! When I put in the .40 cent #143 spring, the trigger is still clean and crisp.
What a difference 8oz makes! My scores will surely go up.

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