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Match chamber vs standard chamber?

Pyscodog

Gold $$ Contributor
Is there really that much difference? I have a CZ Precision Trainer and it has the standard chamber. I heard today that someone can modify it and make it a match chamber. My rifle shoots very good the way it is. Am I going to notice that much better accuracy vs what I am getting now? If I was going to spend the money I'd really rather have a match grade barrel with a match chamber.
 
I tend to believe it is not practical to recut a field chamber to a match chamber. There are also differences in the tolerances that factory rifling and match rifling are held too. My aftermarket bull barrel shoots about .350 better than my original factory barrel at 50 yds. The factory barrel shoots just over an 1". The aftermarket barrel cost me $125 10 years ago. However, I would expect your CZ to shoot better than my Ruger 10-22's to start with. I doubt that you would see that much gain just setting the barrel back and rechambering it. There are more differences than the chamber between a match rifle and a factory rifle.
 
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worse case you can play with headspace on the factory barrel to see if it will shoot better before buying a match barrel. but if you got the money go for it.
 
1sickPuppy said:
worse case you can play with headspace on the factory barrel to see if it will shoot better before buying a match barrel. but if you got the money go for it.
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If you're referring to shimming the bolt that's a bunch of snake oil. As long as the headspace is within spec there's nothing to be gained by using those shims
 
SteveOak said:
If I understand what a 22 LR "match" chamber is, it is cut to tighter tolerance i.e. smaller than a non match chamber. If that is correct, it would not be possible to recut a standard chamber to a "match' chamber.
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Best I understood what the guy was telling me. Is the smith doing the work drills out the standard chamber and builds a sleeve, like sleeveing an engine block cylinder, then freeze's it. Then inserts it in the barrel. Then he cuts the match chamber in the new sleeve. Sounds like a of of work, maybe not? May have been a line of BS as well. Seems to me buying a used CZ barrel with the match chamber would be much easier. And cheaper.

Amazing the things you hear at a gunshow. LOL
 
Pyscodog said:
Best I understood what the guy was telling me. Is the smith doing the work drills out the standard chamber and builds a sleeve, like sleeveing an engine block cylinder, then freeze's it. Then inserts it in the barrel. Then he cuts the match chamber in the new sleeve. Sounds like a of of work, maybe not? May have been a line of BS as well. Seems to me buying a used CZ barrel with the match chamber would be much easier. And cheaper.

Amazing the things you hear at a gunshow. LOL
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Sounds like a good way to jack up a barrel. Keep your money in your pocket and enjoy your rifle as is.
 
Shimming the barrel the way Lilja describes on their website. Custom barrel only way to guarantee head space is to send them the action so they can cut the barrel shoulder or tenon length however you want to view it to desired headspace for the ammo you want to shoot assuming your action and bolt face is square.

Will the smith cutting the barrel know the tenon length to set headspace? Too tight a headspace you get crush fires which the shims lilja sells will come in handy.

Will that work with all ammo probably not so you shim the barrel and play with headspace till you find what works for the ammo you want to shoot.

some smiths have reamers specific for certain ammo ie nevis reamer is for lapua. some smiths played with lead angle or depth of cut which works for some ammo and not for others. some ammo prefer engraving of the bullet some don’t. Find a smith who works on 22lr barrels and I'm sure they will provide a lot of answers or more information. Hence some of the 22lr guys testing different ammo and sometimes different lots.

You can rechamber by cutting off the tenon and using a match reamer. Is it worth the money vs just buying a new barrel with a match chamber is really up to you and what you want to achieve out of the rifle. Bartlien use to sell CZ barrels with a benz chamber and they can set the tenon length or cut the shoulder to your specs. But you have to know the headspace you are trying to achieve. Lilja has more info on their barrels and how to set headspace on their website.

if you want a quick peak at what a match chamber barrel does with a specified head space check out

 
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The key difference between standard and match chambers in CIP spec rifles such as CZ bolt action .22LR is in its length. The standard CZ chamber on bolt action .22LR will be slightly longer than the CZ match. There's little, if any, difference in chamber diameter.

As a result, the most straightforward way to make a match-type of chamber out of a CZ standard is to slightly shorten the barrel at the breach end. This will involve adjusting tenon length.

There was a fellow who offered this kind of service who posted about it on the CZ forum on RFC.
 
No mention yet of the Biggest difference in CZ std vs match chamber
The match chamber sticks the bullet well into the rifling--the chamber seems smaller in diameter but the big diff is the other--It makes a difference in my experience--some types of ammo are even harder to chamber--as it resists being shoved in the grooves--overall my CZ experience is that the match chamber versions I have dealt with are better shooters--not by a lot but they just seem to be more consistent I have a 24 in std chamber that shoots lights out with good ammo.
Overall I think it is how happy that rifle is with a particular lot of ammo more than the chamber but if I were getting another CZ it Would be an MTR no doubt
Got a new MTR for a pal last week--I mounted the scope--sent 9 rounds to zero scope and handed him the rifle--this group is the FIRST ten rounds down the pipe after setting the scope--it was with the first ammo I snagged out of my stash a good lot of Eley Club--Needless to say I was very impressed and this was with trigger at factory set 2.5 lbs! And a raw rookie on the rifle--from bipod and Protektor bag at 25 yards--yea I know 25 but it printed like that at 50 all afternoon --point being this was the first group attempted with the brand new MTR match chamber CZ
dealer had two in stock we picked the one with best wood and got LUCKY
Ten round group
 

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grauhanen said:
The key difference between standard and match chambers in CIP spec rifles such as CZ bolt action .22LR is in its length. The standard CZ chamber on bolt action .22LR will be slightly longer than the CZ match. There's little, if any, difference in chamber diameter.

As a result, the most straightforward way to make a match-type of chamber out of a CZ standard is to slightly shorten the barrel at the breach end. This will involve adjusting tenon length.

There was a fellow who offered this kind of service who posted about it on the CZ forum on RFC.
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You are correct according to my reading on the difference in the Bentz style chambers vs the match chambers, my research tells me the match chamber is shorter jamming the bullet into the lands.
Supposedly there is a gunsmith, I think in Alabama, shortening the breach end of factory barrels and the tenon length accordingly to improve factory barrel accuracy. While this is illegal in sanctioned matches it could be helpful to guys wanting to improve accuracy in their rifles so I’m certain someone is doing it.
 
jvshiver said:
You are correct according to my reading on the difference in the Bentz style chambers vs the match chambers, my research tells me the match chamber is shorter jamming the bullet into the lands.
Supposedly there is a gunsmith, I think in Alabama, shortening the breach end of factory barrels and the tenon length accordingly to improve factory barrel accuracy. While this is illegal in sanctioned matches it could be helpful to guys wanting to improve accuracy in their rifles so I’m certain someone is doing it.
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A factory barrel will be, forever, a factory barrel. A simple chamber mod is a waste.
 
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