Which size Dewey rod have you got? I have the same coated rod in .17 caliber, but I made the mistake of ordering one that was .22 caliber first and it definately would not work on my CZs. But it's odd itworked on your other CZ.

 

CZ .22LR bores are notoriously TIGHT. If you use a Dewey .22 caliber coated rod, it's almost certain to get stuck. Ask me how I know.

I only use Pro-Shot stainless steel rods now; either 22 or 20 caliber. They work just fine.

 

CZ .22LR bores are notoriously TIGHT.

This is a misunderstanding. As required by regulations, they are made to meet CIP specifications, and no tighter. The same applies to most rifles made in European countries, including those from Germany (e.g. Anschutz, Walther, FWB), Finland (e.g. Sako, Tikka) and Spain (e.g. Bergera).

The potentially misleading information on CZ's FAQ webpage aside, the idea of being tighter than otherwise stems from the fact that most North American-made firearms are made to SAMMI specifications. In .22LR SAMMI bores are indeed greater in diameter.

The problem of some cleaning rods not "working" in CZ rifles has more to do with the ejector interfering with the rod, not that the bore is extra tight.

 

It is tight, I use a .20 rod and jags in mine after doing a lot of research here.

 

I use a .20 cal rod and jag also… 😉

 

I bought a Dewey .22, got stuck, had to take back and trade for a .20 for my CZs.

 

Well you just learned the hard way what more reading here would have taught you the easy way. This has been common knowledge here since before I joined back in 2006. I personally have ZERO use for any coated rod and use only high end polished stainless steel rods, in my .22 CZ's its .20 ProShots.

 

When you guys say that you got a .22 rod, did you get a 22 RIMFIRE rod? If not, THAT is the problem. A .22 centerfire rod has a larger diameter even though still categorized as .22 caliber.

 

My Tipton .22 carbon fiber rod goes down the bore just fine.

 

I just ordered a .17 rod and jag for my 457. According to CZ that's what you need. I even ordered a .17 bore snake for when I'm at the range.

 

I use a .17 rod with polished brass (non-knurled) adapter. Never had an issue. I use a Birchwood Casey rod. I also use felt pellets more often than patches for regular maintenance cleaning and oiling stuck on a button jag where I further turned down the head for even less bore interference (some jag heads can even be tight in a CZ).

 

I'm using a .22 Pro Shot.

 

Thanks for the replies.

I see my 22 Dewey rod issue is pretty common with the CZ 457. If It had not worked with my 452 American and my new Anschutz 1761 MPR, I would have known better. I also have a 17 Dewey rod that I use for my 204 Ruger rifle. As luck would have it, I do have that other 22 rod that works just fine. I am just pleased to learn there is nothing to worry about regarding the 22 LR barrel that I mounted to the 457.

 

I use Otis cables on all of my precision rifles and no problems at all. Plenty of rods including .20 just laying in wait these days.

 

17 rod with .22 adapter on my cz, work good.

 

Same for mine.

 

I have used a SS 20 caliber rod since I bought my first CZ 452 Lux in 2006. You may not agree with the “incredible accuracy” wording but one should adhere to the .211 bore section.

Per the CZ website “Our 22 LRs use our cold hammer forged and lapped barrels, and are built a bit tighter than many other guns. In 22 LR we run a .211 bore, which is one of the reasons our .22s are known for incredible accuracy. This also means that a .17 or .20 rod and jag are required for cleaning, since a .22 rod will be too large.
Additionally, use of .22 Short, Long and ‘Sub-Sonic’ ammunition isn’t recommended because of the tight bore. This is not to exclude quality match or target ammos, which may remain sub-sonic in speed.

 

Per the CZ website “Our 22 LRs use our cold hammer forged and lapped barrels, and are built a bit tighter than many other guns. In 22 LR we run a .211 bore, which is one of the reasons our .22s are known for incredible accuracy. This also means that a .17 or .20 rod and jag are required for cleaning, since a .22 rod will be too large.
Additionally, use of .22 Short, Long and ‘Sub-Sonic’ ammunition isn’t recommended because of the tight bore. This is not to exclude quality match or target ammos, which may remain sub-sonic in speed.

The insinuation in CZ website assertions aside, the fact remains that CZ firearms are manufactured to CIP specifications. They don't have a tighter bore than the regulations allow. Other European manufacturers adhere to CIP, while most North American factory rifles stick to SAMMI.

Cleaning rods that are made for .22LR should work in CIP-spec bores. If they don't, the rods are not suitable for any CIP-spec bore.

Below is a comparison furnished by CZ itself. It shows that the lands are 5.38mm or 0.2118".

 

Glad I saw this! Same thing happened to me…..thanks for the info.

I just did get a specific .22lr Bore-Tech rod for my Vudoo and Anschutz….sounds like I need another now.

 

Bore Tech makes two different 22. cal rods. If you have the orange handle ( RF) you’re fine.

 

My Dewey coated rods stuck also. Got a .20 Dewey coated rod with 1 inch patches works fine for my 4 CZ's. Use my .22 rods for all my other .22's.

 

My 22rf ss rod fits in my 452 UL and the 457. Guess I have a worn out rod or oversize bores in the rifles? Al wondered to himself.

 

As I wrote, I was surprised to find the problem as I have used the same rod with my 452 American 22 LR. In its current condition with huge gouges in the coating and damage from literally hammering it out of the 457, I will be retiring that rod and getting another. A 20 that can take a 22 jag is what I will be looking for.

 

It all depends on the Outside Diameter of the rod. J Dewey .22 Caliber SS rods are .203 O.D.

Their Nylon Coated .22 Caliber rods are .205/.210 (the coated rods vary).

So you need to get their .20 caliber nylon coated rod for a CZ. Their .20 caliber coated rods are .185/.190 O.D.

 

Tight? Try getting arod down a 17 hmr or 17 m2.

 

Not to hijack this thread, but looks like I'll be picking up a 17HMR this week. It will be my first 17 of any sort. I have a 17 caliber rod (Rural King brand) that I've been using in my CZ 22lr rifles. I noticed it has a very slight bow in it. I may have to pick up another 17 caliber cleaning rod since there will not be any wiggle room in the pipe of the 17HMR rifle.

 

Onearm sir

I have to use a .20 cal. rod in my cz .22’s , even if the jag and rod goes through it won’t with a patch and my rods are proshot s/s and just barely goes though the barrel without a patch after it’s clean won't go through if it’s dirty.

 

Just a couple FYI s - I use a cheap solid Brass rod from amazon, ca $15 CDN and it's only ca .210". And I only PULL patches thru with a loop-jag, so I never have issues with the patch folding over the jag 'too thick' and getting stuck. 22cal Brushes all seem OK, both "all-brass' and Nylon ones too. Just have to be a touch more careful with the Nylon since the 'core' is metal and can scratch bores with the tip.

 

As I now understand the origin of the problem and have a plan to solve the problem, I think we can retire this thread. I particularly appreciated the chart on the differences between CIP and SAAMI standards for chambers and bores that was included in Reply number 21. That was very informative and exactly the kind of information I am always hoping to get in replies to my more serious posts.

 

I just bought a nylon .17 Dewey rod with jag and patches today so I'm all set. Tried to clean my 452 with the .22 rod and had to pound it through with the palm of my hand. Didn't know they were that tight. So, now I'll have the right tools for the job.

 

It sure is difficult getting a thread shut down. Rather than hijack this thread, why not just start a new thread talking about the new subject. I am guilty of the same at times and am trying to clean up my act too.

By the way, I would never run a rod with a bow in it, or that I could easily give a bow through any rifle of mine. That is what I was taught anyhow. Also, I never run a rod without a bore guide in place, as I was also taught. Unfortunately all of the bore guides I have found for CZs are open in the underside, when in place such that the cleaning solvent can drip into the action. The ones for my Anschutz and Rugers are round, with rubber chamber sealers and do not do that.

 

No bow when you were hammering/ mangling a coated rod thru the tight bore?
And if you dont want solvent in your action/ trigger simply clean the rifle upside down.