CZ Hammer Coach: Spring mods

[John Two Crows]

Howdy, 

      Please forgive any ignorance here if I have posted to the wrong forum. I am looking to lighten the springs on my CZ Hammer Coach shotgun. The shotgun is made by Huglu in Turkey, sold under CZ. The springs in question need to lightened and I was wondering if the hive mind here had any suggestion on the best way to accomplish this. Also how much material may need to be taken off, I realize that a lot of it may be some take material off and test. Just can't put metal back on so didn't want to make a fatal error and have to find all new springs. 

 

Thanks,

John Two Crows

[Colorado Coffinmaker]

First, every flat spring is different.  How much to remove is relative.  However, BEFORE you even think about attacking those springs, source up a replacement set of springs.  Good chance you'll need 'em.  Also, if you don't understand Spring Drinking (GRINDING) 101, don't even start.

 

 

I ABSOLUTELY HATE OTTO

Edited January 27, 2023 by Colorado Coffinmaker
Fix OTTO

[Warden Callaway]

I ran across a Liberty that was imported years ago - same as CZ.  Looked perfect but wouldn't always fire.  Springs had been lightened.  I got new springs from CZ and put them in and solved the problem.  

 

 

 

[Needle-Nose-Tom]

I actually did this exact thing yesterday on my CZ. It was already expertly done prior I just took a little more material off. I couldn't be more happy with it now. Practicing the TBone method I now can easily get the hammers cocked and action open simultaneously. Plus one on the extra set of springs I would not have dared do it from a stock spring myself. I just took a hair off for my liking and still have excellent primer strikes. It can be done but be careful. 

[Buckshot Sheridan]

I ended up narrowing them up by about .060. Make sure the transitions in the width don’t have sharp corners to act as a stress riser which will cause the springs to break. 

[Warden Callaway]

I have a CZ-USA hammer coach gun. I have no problem cooking both hammers at the same time with stock springs using the T-Bone method. I made some snap cap shells to practice.

 

 

 

[John Two Crows]

2 hours ago, Colorado Coffinmaker said:

First, every flat spring is different.  How much to remove is relative.  However, BEFORE you even think about attacking those springs, source up a replacement set of springs.  Good chance you'll need 'em.  Also, if you don't understand Spring Drinking 101, don't even start.

Oh I would never work on my primary springs  I've been around the block enough to know that. These are backups that I will work on. 

[John Two Crows]

2 hours ago, Needle-Nose-Tom said:

I actually did this exact thing yesterday on my CZ. It was already expertly done prior I just took a little more material off. I couldn't be more happy with it now. Practicing the TBone method I now can easily get the hammers cocked and action open simultaneously. Plus one on the extra set of springs I would not have dared do it from a stock spring myself. I just took a hair off for my liking and still have excellent primer strikes. It can be done but be careful. 

Anytime you mess with springs it is a delicate affair. I have been sweeping the hammers back but there is just a too much resistance for clean motion. Easy enough fix but I dont have a lot of experience with hammer shot guns. Tons of experience with other firearms so what you are saying figures pretty well. Better to ask and get the experience of others to lean on instead of a small pile of messed up springs ROFL

[Warden Callaway]

I've never had a problem cooking both hammers on the stock CZ. But I have good working hands. (The rest of me is going to hell in a handcart.)

 

I have many other original doubles that the springs are much stronger. The Original 10 gauge Colt 1876 are so strong that I about need a cheater bar to cock one at a time.

 

[The Original Lumpy Gritz]

Interesting, my new CZ Sharptail hammerless coach gun,  uses coil hammer springs.

[Warden Callaway]

Colt 1876 lock vs Cimarron 1876.

 

[Needle-Nose-Tom]

Warden I actually used your video for reference and it was very helpful thank you. I have a hammered classic that was  30 inch barrels cut down to 22 for me. I don't know if that had something to do with it being a different model but they were way stiff and I work with my hands as well. 

[Equanimous Phil]

Check out this thread, there is a very helpful picture of lightened springs made by @Buckshot Sheridan

And you may also check out this thread.

 

I hava two Huglu Hammer SGs, model 201 HRZ. As I understand, they are identical to the CZ. The first one made in 2018 was quite fine out of the box, with significantly lighter springs than my second one from 2021. Easy to cock both hammers in one sweep. Haven't taken the time yet to lighten hammer springs of my second... 

Edited July 9 by Equanimous Phil
spelling

[Buckshot Sheridan]

I was looking for that picture to put on here, but it’s not on this phone. 

[Rough 'N Ready Rob]

I asked this same question about 6 to 8 months ago, got two answers, one from Buckshot I think and one from a Cowboy in So. Calif. Not being a computer guy I don't know how to find it. Maybe someone knows how to go back in the files and find it.

  Good luck.

Rob

[Abilene, SASS # 27489]

44 minutes ago, Rough 'N Ready Rob said:

I asked this same question about 6 to 8 months ago, got two answers, one from Buckshot I think and one from a Cowboy in So. Calif. Not being a computer guy I don't know how to find it. Maybe someone knows how to go back in the files and find it.

  Good luck.

Rob

Anything over a month old and you can't find it on a Wire search.  You need to go to google.  I typed:

site:sassnet.com Rough 'N Ready Rob CZ Hammer springs

 

[Rough 'N Ready Rob]

20 hours ago, Abilene, SASS # 27489 said:

Anything over a month old and you can't find it on a Wire search.  You need to go to google.  I typed:

site:sassnet.com Rough 'N Ready Rob CZ Hammer springs

 

This is the way I choose to do my springs, the Roger Rapid way also the way we were taught in smith school. I didn't use the brass collar, grinding the end of the spring at a sharp angle, allowing the hammer to come forward. Go slow and keep them cool, be sure to get any cross scratches out of the springs.

  Rob

[Javin91]

Hey all.

Apologies in advance I’m new to this SASS community.

 

I bought a brand new CZ double hammer classic from my local sportsman’s warehouse in June of 2025. A month and roughly 100 shells later and the left hammer went completely dead on me. The gun was under warranty with Sportman’s so they took it in and after a little under a year they gave it back to me still broken with a note stating the leaf spring had broke and to replace both of them but they stated after reaching out to CZ they were told CZ doesn’t warranty or sell parts for any of their Turkish made shotguns.

 

am I completely out of luck? 

[The Original Lumpy Gritz]

On 7/7/2026 at 3:12 PM, Javin91 said:

Hey all.

Apologies in advance I’m new to this SASS community.

 

I bought a brand new CZ double hammer classic from my local sportsman’s warehouse in June of 2025. A month and roughly 100 shells later and the left hammer went completely dead on me. The gun was under warranty with Sportman’s so they took it in and after a little under a year they gave it back to me still broken with a note stating the leaf spring had broke and to replace both of them but they stated after reaching out to CZ they were told CZ doesn’t warranty or sell parts for any of their Turkish made shotguns.

 

am I completely out of luck? 

You need to call CZ and talk to them.

Have the serial number handy.

[Sedalia Dave]

There are places that can make custom V springs. A good blacksmith can forge them if he has a pattern.

 

Start here.