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Tammy and I
Sincerely Appreciate Your Patronage
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TriggerShims
CZ / Brno Rimfire Rifle

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Rebellion Against Tyrants is Obedience to God
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Manufacturer of
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American Made Gun Shims
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ShivelySales.com
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Gun Shims
Gun Smith Supplies
Since 2008
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We Manufacture the Widest Selection of Gun Shims to be Found Anywhere on the Planet

100% American Family Owned

Shively Sales - Manufacturer of
TriggerShims Brand
Gun Shims
in
Michigan Center, Michigan

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PAGE INDEX

CZ / Brno

Shims and Parts



BOX~CZ

CZ 452 ~ 453 ~ 455

CZ / Brno Head Space Bolt Shim Kit


CZ / BRNO Rimfire Rifle Bolt Shims

CZ Models ~ 452 ~ 453 ~ 455

Brno 1 ~ 2 ~ 2E ~ 3 ~ 4 ~ 5

Also Fits:
Webley & Scott Xocet .22
Norinco JW25A and Variants
Diana R22 Classic or Carbon

New CZ / Brno Bolt Shims Now In Stock

CZ / Brno Rimfire Bolt Shims

My Bolt Shims for the CZ / Brno Rifles fit these Models;

  • CZ 452 ~ 453 ~ 455
  • Brno 1 ~ 2 ~ 2E ~ 3 ~ 4 ~ 5
  • Also Fits ~ Webley & Scott Xocet Bolt Action Rimfire Rifle
  • Norinco JW25A and Variants
  • Not for CZ 457 ~ Click Here for CZ 457

These CZ Shims are .610" X .690" - Available in .002" to .009"

May Fit Other Models with a .604" to .609" X .705" Bolt

Known to fit Norinco CZ 452 Copies

CZ Bolt Shims sold in paks of 4 to check and adjust bolt to barrel fit

How does a Rimfire Bolt Shim work? The actual head space is in the recessed face of the bolt. Shimming between the two bolt halves ensures the bolt is up snug against the breech. If the bolt has excessive clearance at the breech it can to cause misfires and light strikes, or simply inconsistent accuracy. When a Production Rifle is assembled, a bit of extra room or excess tolerance can be left, and this slight variable can affect accuracy. When the bolt action rifle’s bolt locking surfaces become worn increases in the headspace can cause light firing pin strikes, poor ignition (misfires), looseness of the bolt, and loss of accuracy.
Proper Adjustment of the Bolt / Breech with Our Shims may Increase Accuracy

CZ / Brno Rimfire 455 Bolt

Factory fitting of the barrel into the receiver can also leave excess clearance between the bolt and breech. Shims can also be used for adjusting after Re-Barreling.
If you are getting misfires and light strikes shimming the bolt may be a good way to solve it.

These are the Original TriggerShims Brand CZ / Brno Rifle Bolt Shims
A 4 Pak or 5 Pak should do most any gun, Order multiple Paks for Multiple Guns and Save $$
Made from Tough, Long Lasting 304 Stainless Steel

Hi-Volume Shooters report that these shims can last 6,000 to 10,000 Rounds or More!

TriggerShims Bolt Shims come in the following assortments, Buy Multiple Paks and Save $

NEW 5 Piece Kits ~ Include .0015" Shims for Finer Adjustment

  • 4 Pak Assortment - $11 includes 1 each .002", .003", .004" and .005"
  • 5 Pak Assortment - $14 includes 1 each .0015", .002", .003", .004" and .005"
  • Use Drop-Down V and Buy 2X Double or 3X Triple Pak and Save $
  • 2 Shim Pak - $7.50  *Specify your size in Box Below .0015" or .002" - .005"
  • You can Request Your Own Assortment Thicknesses In Box Below
  • Includes Free ~ First Class Mail Economy Shipping ~ International add $1

Bolt Shims .610" X .690"

Item # SS-CZ/BS Bolt Shim Pak - CZ Models ~ 452 ~ 453 ~ 455

CHECK YOUR MODEL NUMBER - These are NOT for CZ457

Click Box to Choose Different Quantities
Includes Free U.S. Postage

CZ 452/453/455 and Brno Bolt Shim Pak
Choose Assortment Shim Pak
Enter Choice / Request Below

👉Link To: ADD USPS TRACKING UPGRADE with SHIPPING PROTECTION

👉Link To: INTERNATIONAL TERMS / POSTAGE

Lance, My 1981 BRNO No. 2 was scattering shots last week. I’m just back from the range where it liked your .003 shim well enough to put 11 hits in the red at 200 yds! That’s the second week in a row that your exciting contributions to our sport have shown extraordinary results! Thanks Again, Craig


JP in Finland

TriggerShims was asked by Gunsmith Jason Lowe ~ Lowey Products Australia to make shims for this bolt, and We Appreciate His Measurements, Photo's and Field Testing!

Lance, I tried different shims and combinations of shims. I finally settled on .005". This gives me a slight open and close resistance. My group size shrunk to half the grouping I used to get. Not a benchrest grade group but a very respectable minute of squirrel.
Thanks for the CZ shims, Howard in the Great White North


Link To: Kurt the Gunsmith ~ A Unique Look at the CZ-457 Action
Link To: Kurt the Gunsmith ~ CZ-457 Accuracy

BOX~CZ457

CZ 457 Bolt Shim Kit

CZ-457 Head Space Bolt Shim Kit

CZ 457 Bolt Shims

CZ / Brno Rimfire Bolt Shims

~ New Size for Better Fit ~

Guaranteed to Fit or Your Money Back

New Size is .376" X .565

New CZ 457 Bolt Shims Now In Stock
Designed and Made Specifically By TriggerShims for the CZ 457 Rimfire Rifle

CZ / Brno Rimfire Bolt Shims

My Bolt Shims for the CZ Rifles fit these Models;

  • CZ 457

These CZ Shims are .376" X .565"

CZ Bolt Shims sold in paks of 4 or 5 to check and adjust bolt to barrel fit

These are the Original TriggerShims Brand CZ / Brno Rifle Bolt Shims
A 4 Pak or 5 Pak should do most any gun, Order multiple Paks for Multiple Guns and Save $$
Made from Tough, Long Lasting 304 Stainless Steel

TriggerShims Bolt Shims come in the following assortments, Buy Multiple Paks and Save $

NEW 5 Piece Kits ~ Include .0015" Shims for Finer Adjustment

  • 4 Pak Assortment - $11 includes 1 each .002", .003", .004" and .005"
  • 5 Pak Assortment - $14 includes 1 each .0015", .002", .003", .004" and .005"
  • Use Drop-Down V and Buy 2X Double or 3X Triple Pak and Save $
  • 2 Shim Pak - $7.50  *Specify your size in Box Below .0015" or .002" - .007"
  • You can Request Your Own Assortment Thicknesses In Box Below
  • Includes Free ~ First Class Mail Economy Shipping ~ International add $1
CZ 457 Rimfire Bolt Shims

Bolt Shims .376" X .565"

Item # SS-CZ457 Bolt Shim Pak

Click Box to Choose Different Quantities

Includes Free U.S. Postage

CZ 457 Bolt Shim Pak
Choose Assortment Shim Pak
Enter Choice / Request Below

NOTE: These are CZ 457 BOLT SHIMS

👉Link To: ADD USPS TRACKING UPGRADE with SHIPPING PROTECTION

👉Link To: INTERNATIONAL TERMS / POSTAGE


Repeat Customer Rodolfo in WA Writes:
Lance, I do love supporting your business because of the quality of the product I’m getting. More power to you and Tammy. God Bless, Rodolfo

Mike from PA Writes:
Lance, just a note to share the joy :-) your shims in my CZ 457 AT-ONE cut my groups (5 groups of 5 shots including cold bore shot) from 4 inch total of all five groups to 2.065 total of all five groups, almost in half. The CZ needed .007" of shims. It was little hard to open the bolt after firing so I backed down to 006, using a 004 and 002. Still shot a 7/16, a 5/16, a 3/8, a 7/16, a 5/8. Than I put 9 shots in 9/16 at 50 yds. I used to be sure of a 3/4 inch group, with an few 1/2 inch groups. I can't wait to see what I get at 100 yds and 150 yds ~ Thank you for your product!

Craig from NC Writes:
Lance, My new CZ 457 Jaguar with it’s 28” non-MTR barrel was shooting very respectably at 200yds but not quite up to the performance of my two MTR guns. I tried one of your .003" Bolt Shims but couldn’t close the bolt. But, the .002" shim created a new gun and shooting experience!! The very first outing yielded a 3/4 MOA group at 200 Yds all in a 2” bullseye square. Not bad for an 83 year old shooter.

From Adam in FL:
I would like to Thank You. The CZ 457 bolt shim kit produced SK Match results from the CCI Standard ammo I was using at 50 yards. I couldn’t be more pleased and you can be assured that I will spread the word in my circle!

Lance - Thanks for the shims. I was at the point this rifle was going for sale, it’s amazing what .006" worth of shims did for the accuracy. Thanks so much and great response and great parts. ~ Joel in Indiana

Hello Lance, Thank You for the quick service. I am in Sudbury Ontario and received my CZ Bolt Shims in 8 days. A great little product, who knew that something so minor would have such an effect on accuracy, my groups have shrunk by 1/3. I would definitely recommend these to others.
Thanks Again, Rick


BOX~CZBarrel

CZ Barrel Shims

Barrel Shims for CZ / New for 2023

CZ Rimfire Rifle Barrel Shims - (NOT Bolt)

CZ Models ~ 455 / 457

Brno Models ~ ?

New for 2023 CZ Barrel Shims

Fits Models with a .707" + or - Barrel Shank

CZ Barrel Shims sold in paks of 3, 4 and 5 to check and adjust Barrel to Receiver fit
Generally Used for Long Shank Replacement Barrels

CZ Barrel Shim

Will Fit Barrels with a .707" Shank and > .850" O.D. at Receiver

Barrel Shims are used to fit Custom Made Long Shank Barrels, and will move the barrel forward of the receiver.
These Are NOT Bolt Shims

Bolt Shims Sold Below will move the Face of the Bolt Forward to the Barrel Breech, Barrel Shims will move the Barrel FORWARD away from the Bolt.
Barrel Shims are used if your Bolt or Headspace is Too Tight, or you are Replacing the Barrel with a Long Shank

These are the Original TriggerShims Brand CZ / Barrel Shims Custom Made in Our Own Shop

TriggerShims CZ Barrel Shims come in the following Assortment Paks;

  • 5 Pak Assortment - $15.00 ~ Includes; .0015", .002", .003", .004" and .005"
  • 4 Pak Assortment - $12.50 ~ Includes; .0015", .002", .003", .004"
  • 3 Pak Assortment - $10.00 ~ Includes; .0015", .002", .003"
  • 2 Shim Pak - $7.50  *Specify your size request in Box Below ~ .0015" or .002" - .005"

  • You can Request Your Own Assortment Thicknesses In Box Below ~
    Choose From .0015" or .002" - .005"
  • Includes Free ~ First Class Mail Economy Shipping ~ International Add $1

Barrel Shims .710" X .850"

Item # SS-CZ/BarShim

Click Box to Choose Different Quantities

Includes Free U.S. Postage

NOTE: These are Barrel Shims not Bolt Shims

CZ Barrel Shim Pak
Choose Assortment Shim Pak
Enter Choice / Request Below

NOTE: These are Barrel Shims not Bolt Shims

👉Link To: ADD USPS TRACKING UPGRADE with SHIPPING PROTECTION

👉Link To: INTERNATIONAL TERMS / POSTAGE

Lance, The barrel shims are a perfect fit on my 457 Varmint, both I.D. and OD. I'm happy with them. Thanks again, Bill


v.4t Item # VF457EE
TriggerShims Logo CZ 457 Extractor

~ NEW ~
CZ 457 Extractors

CZ 457 Exact Edge Extractor by Volquartsen

Fits Models CZ 452/453/455/457
Now Includes Spring Clip

In Stock ~ Order Now! ~ Ships Next Day M-F -
High Quality Replacement CZ Extractors by Volquartsen

CZ 457 Extractor

Wire EDM Manufactured to Exacting Tolerances from Hardened A2 Tool Steel

    Includes:
  • 1 Extractor
  • 1 Holder
  • NOTE: Extractor Spring Clip Now Included

Fits: Models CZ 452/453/455/457

Fits: Right Hand Models

Volquartsen has a Long History of making the Best Upgrade Replacement Extractors on the Market
I contacted Scott Volquartsen in the fall of 2022 and relayed that I had a lot of customers interested in a Quality Replacement Extractor for the CZ rifle.
With 25+ years of experience in replacement extractors, I knew they were the right guys to ask, and to my surprise, Volquartsen made a run of A2 Tool Steel Wire EDM Extractors for the CZ 457 rifle.

CZ 457 Extractor Drawing

Our first order was a fast sellout, and received well by shooters, Now Includes Spring Clip!

Without question, Volquartsen is "THE" extractor to upgrade your rifle.
Order Now! - Ships ASAP!

Price includes Free Shipping and Tracking - USA Only ~ Sorry No Exports ~

Our Free Shipping is USA Only

SKU: VF457EE - In Stock NOW
Orders Placed Will Ship Next Business Day

~ $42 includes Free USA Shipping w/ Tracking
and Shipping Protection~

Save $4 when you buy TWO ~ Quantity Discount MUST use Drop-Down Box

Choose Any Quantity Below USA ONLY ~ Free Shipping ~
Add Comments Below

~ No Exports on This Item ~
for Export Orders see Volquartsen Direct

👉Click Here to See Installation Video at Volquartsen

I asked the factory in Czechoslovakia specifically - Are the Extractor, Holder, and Spring the same across the CZ models CZ 452/453/455/457 Reply from CZUB Factory;
"The specifications are the same"


Item# CZ Extractor Spring
CZ Extractor Spring

CZ Extractor Spring

Now In Stock ~ Volquartsen Matching Extractor Clip Spring

Included in Extractor Kit Above👆

~ Click Here to Send Lance an Email to be added to the Notification Waiting List ~


~ VF457EE Extractor Reviews ~

Hi Lance, These CZ457 Volquarten parts work great! Since Volquartsen's extractor does not have half of the extractor hook and pusher end filed off they hold a cartridge securely without spitting it out as was an issue with my original CZ parts. My CZ extractor set dropped every empty case on top of my single shot magazine without ejecting it which made the single shot mag useless. This problem has been fixed by the Volquarten parts. Empty cases now extract and eject flawlessly. Some CZ owners might be concerned that since the bottom of the Volquarten hooks do not have a radius filed into them they might not allow cartridges to feed well out of the magazine but I have experienced no problems at all with feeding.
Bottom line: I really like the Volquartsen extractor set! ~ Jack

Hi Lance, Just wanted to tell you the CZ 455 extractors I purchased were finally installed in my CZ 455 with it’s 17 HMR barrel along with a .005 bolt shim to reduce the head space from .051 to .047. I went through 150 rounds of 17 HMR, three different manufacture (CCI, Hornady & Federal) with no problem, extracting every empty case as well as a few live rounds to see if they would extract, no problem.
Your idea along with Volquartsen Expertise make for a very good product, an extractor that works! ~ William in PA


Bolt Shim Instructions
Bolt Shim Instructions
TriggerShims Snek

LANCE'S TECH TIP:
Rimfire Bolt Shim Installation
~ A General Guide ~

Rimmed Cartridges use the thickness of the cartridge rim for head-spacing.
.22 Rimfires Headspace on the Case Rim, and the actual head space is in the recessed face of the bolt.
Generally Speaking there is extra room left in production guns between the Bolt and Breech to accommodate a wide variety of ammunition with varying rim thicknesses
You should first measure the depth of your bolt face pocket to insure it meets SAAMI minimum depth.
Shimming between the two bolt halves ensures the bolt is seating the cartridge up gently against the breech with your chosen brand of ammunition.
You can use our color coded numbered shims like a gauge to find the when the bolt face touches the barrel breech face, and then calculate where you want to be with your bolt headspace depth and rim thickness measurements.
I cannot tell you which shim best works with your rifle, you decide that yourself by fitting and feel and by shooting.
Installing Bolt Shims requires fitting by hand, and checking with the Bolt installed in the Rifle, and Locked Down - you do not measure with the Bolt out of the Rifle.
To establish the Bolt/Breech fit, shims are installed and fitted on an empty chamber.
If possible it may give you a better feel if you leave the extractors off some rifles while fitting shims.
Start with a 4 or 5 Pak of shims, install the .0015" or .002" thinnest shim and see how your bolt closes, if it seems to close as normal, then continue to install each thicker shim until the bolt starts to close harder than normal. At the point where your bolt begins to close hard, that was the amount of slack that was in your bolt, measured by whatever shim or shims combined were needed to bring the bolt up tight to the breech. Now it is best to remove that shim, and step back one number, example would be if a .005" Red shim causes the bolt handle to close harder than normal, then take it out and install a .004" Purple.
If you have to force or put undue stress on your bolt to close it, you should reduce the number of shims. You will generally only use 1 of the 4 or 5 shims in the package, but you can stack shims together if needed. When you have the correct shim installed, your bolt should close normally or just (ever-so) slightly tighter than normal. If the bolt closes slightly tight, it is best to back up one step, remove .001"
Put a very small drop of oil on the shim. Now you can go to the range and with the barrel pointed in a safe direction, once again check fit with your favorite ammo.
Due to variations in rim thickness, you may have to reduce the thickness of shims, remember you have already removed all the excess headspace from the bolt/breech, so now the only thing to do is remove thickness (shims) if / as needed to get to your sweet spot or required headspace for the rim thickness of your favorite cartridge.
For Longest Shim Life use a drop of oil or a (very small amount of) grease on your shim.
If you have to force or put undue stress on your bolt to close it, you should reduce the number of shims. A minimum of clearance should be maintained, while maintaining proper headspace. Do not put undue stress on the bolt by shimming too tightly as it is unnecessary!
At no time do you want to force the bolt to close, did I explain that clearly?
If you have any question, use a headspace gauge to check for proper headspace.
Bolt Shims have in many instances cured light strikes. Will they help with Accuracy? Don't take my word for it, Read our Customer Reviews or ask our Customers
Simply Chambering More Consistently Yields More Consistent Results.
Your Satisfaction is Guaranteed, if you feel you receive no benefit you may send your shims back for a Full Refund.

TriggerShims Bolt Shim Instructions Copyright June/2023

Click Here for ~ Everything You Need To Know About Headspace from Kurt the Gunsmith

V4/2024


TriggerShims Snek

Rimfire Rifle Bolt Shim Index

BoltShim-INDEX 9/24

Our Ever Expanding Selection of Rimfire Rifle Bolt Shims

Links to Our List of .22 Rifle Bolt and Barrel Shims

  1. Anschutz 54 ~ Now In Stock!
  2. Bergara B-14R Rimfire Bolt Shims
  3. CZ and BRNO Rimfire Bolt Shims
  4. CZ 457 Rimfire Bolt Shims
  5. Kimber 82G Target Rifle Bolt Shims
  6. Lithgow LA 101 and SA 2020 Rimfire
  7. Marlin 80 / 983 Rimfire Bolt Shims
  8. Mossberg 44 U.S. Bolt
  9. Mossberg 144 LSB Bolt
  10. Remington 5 Bolt Shims
  11. Remington 40X Bolt Shims
  12. Remington 504T Bolt Shims
  13. Remington 513T / 521T Rimfire Rifle
  14. Remington 540X Bolt Shims
  15. Ruger American Rimfire Bolt Shims
  16. Ruger 77/17 77/22 Bolt Shims
  17. Savage BMag Bolt Shims
  18. Savage MKII Bolt Shims - Prototype
  19. Springfield Armory Model 2020 Rimfire
  20. Suhl 150 Rimfire Rifle
  21. Tikka T1x and Sako P72 / M78 Rimfire Rifle / Walther KK300
  22. Walther KK500 Rimfire Bolt Shims
  23. Winchester 43 and 52 Bolt Shims
  24. Winchester 69 and 75 Bolt Shims
  25. ~ Barrel Shims ~

  26. CZ 455/457 Barrel Shims
  27. 10/22 Barrel Shims
  28. 2500X and Trident Barrel Shims
  29. 3/4" Shank Bull Barrel Shims

NOTE: email me to be put on a list to Request a New Bolt Shim ~ Send Lance an Email ~

Unsolicited Testimonial:
Just a friendly note on the bolt shims I purchased and installed. My 5 shot group went from dime size at 50 yds to everyone touching and not being able to count individual holes.
Thank You for a Great Product ~ Riley in WV

Unsolicited Testimonial:
Lance, I simply wanted to say thank you for providing Bolt Shims. My first one installed was on my Bergara B-14 22 Trainer. I won the club season matches in 2022. It's more accurate now than my winning season. After seeing an improvement, in an already accurate rifle, I've shimmed my Bergara Shooting Rimfire barreled action, two CZ 457, my 2020 Springfield, and my my 54 Annie. The Anschutz allowed for 5th place in the IR 50/50 factory class last year. I shimmed it yesterday. The common fliers were less frequent and overall consistency was improved. A noticeable improvement was seen in all the rifles.
Thanks again for offering a great product ~ Rob in NC





BOX#CZ457~Headspace

TECH TIP PDF: Measuring Headspace on your CZ 457 Rifle by Jack Behrman

TECH PDF TIP: CZ 457 Measuring Headspace

Measuring Headspace on your CZ 457 Rifle Jack Behrman ~ Click on Photo Link Right to Open PDF in a New Tab ~

If you would like to know how to measure your bolt action rim-fire rifle’s headspace without custom built gauges, this Tech Tip by Jack Behrman will show you how

The discussion of Rimfire Bolt / Breech Fit and the conclusions apply to all Rimfire Bolt Action Rifles although this article illustrates and explains this headspace measurement procedure on a CZ model 457

~ Click Photo Link to Open PDF in a New Tab ~

~ Click Here to Open Headspace PDF in a New Tab ~

Gunsmithing Journal

~ Gunsmithing Journal ~

CZ-457 Accuracy:
The Most Affordable Way to Accurize Your CZ

An In-Depth Article in a Prominent Gunsmithing Journal about Bolt Shims
~ Click Photo to Open CZ-457 Accuracy in a New Tab ~

Quote from Kurt's Article ~ How Bolt Shims Work to Improve CZ-457 Accuracy
"It is no secret that headspace plays a huge role in rifle accuracy. On rimmed cartridges, such as the 17 HMR, .22 LR, and 22 Mag, the headspace is measured off the thickness of the cartridge rim. The tighter the headspace, the more consistent the cartridge will be positioned in the chamber, and the more consistent it will ignite the powder. Accuracy is a direct by-product of consistency and repeatability."


Lance, I received my shim pack in perfect condition. Well packaged and very fast shipping. They are hands-down the best shims I’ve ever used. Thank you for a great product at a fair price.
God Bless, Hank in NC

BOX#FRDidierCZ457

TECH VIDEO TIP: Test of Shims for CZ 457

An Sizable Test of Bolt Shims and Different Ammunition

TECH VIDEO TIP: Test of Shims for CZ 457

Click on Photo Link Right for Didier in Paris Testing Bolt Shims for the CZ 457

The discussion of Rimfire Bolt / Breech Fit and the conclusions apply to all Rimfire Bolt Action Rifles

Painstakingly Testing many different types of Rimfire Ammo to find if there is any benefit to adding Bolt Shims ~ Didier in Paris France gives an in-depth description of the Rimfire Bolt and Shims, Carefully Tests and Records many different types of ammunition and presents the results
~ Click Photo Link to Open YouTube in a New Tab

~OR~ Click Here for Didiers YouTube Video in a New Tab- Test of shims for CZ 457
Please Subscribe and leave a comment and remember what your Mother taught you,
Son, if you cannot say something nice, don't say anything at all
Don't Forget to tell him Lance at TriggerShims.com Sent You!


Hello!
Thank you a lot, you make an amazing work for helping shooters like me! I've got a set of bolt shims and it's a game changer for my CZ! I've got one ELR competition in few month, wish me good luck !
God Bless You! ~ Flavien in France


Mr. Shively, I received my order today and had a chance to install the shim and test fire. I have never really been happy with the accuracy results from my CZ 457 MTR..... until now. I am amazed at what a difference such a simple adjustment makes.
I tried 3 shims and settled on the middle one. This rifle has gone from a mediocre shooter, with regular flyers, to a one hole tack driver. It is now in Anschutz territory. Thank you again for a great product! ~ Ralph

“A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned — this is the sum of good government.” – Thomas Jefferson


Inrange Rimfire / Bolt Shim Insatallation

The Installation:
Brno 4 Bolt Shim
Also Applies to CZ Models ~ 452 ~ 453 ~ 455

TECH TIP VIDEO: CZ/Brno Bolt Shims Installation

This Tech-Tip Video by Dan at Inrange Rimfire shows installing TriggerShims Brand Bolt Shims in a Brno Model 4
Very Clear Explanation that Applies to All Model Rimfire Bolts

Inrange Rimfire TriggerShims Logo

The Results:
Brno 4 Bolt Shim Test at the Range

TECH TIP VIDEO: CZ/Brno Bolt Shim Results

This Tech-Tip Video by Dan at Inrange Rimfire shows the Results After installing TriggerShims Brand Bolt Shims in a Brno Model 4
Very Clear Explanation that Applies to All Model Rimfire Bolts

Inrange Rimfire TriggerShims Logo

Rimfire Rifles Headspace on the Bolt Face, and different cartridges have different rim thicknesses, Try our TriggerShims Brand Bolt Shims and you may be able to improve your accuracy, and Your Satisfaction is Guaranteed!


Longevity

How Long will our Bolt Shim Last at the Range?

TECH TIP VIDEO: CZ/Brno Bolt Shim Longevity Results

This Tech-Tip Update Video by Dan at Inrange Rimfire shows the Results After Several Thousand Rounds in a Brno Model 4 ~ Click on Photo to Open Video in a New Window

Inrange Rimfire TriggerShims Logo

I recently asked Dan how our shim was holding up for him and I was pleased to find he had 5 to 6 thousand rounds down range with one shim....

Dan at Inrange Rimfire wrote;
Your shims are gold man, period. They last, perform better than any other I have tried and are the cheapest mod out there that actually makes a difference. I finished 6th in Canada this season in competition and these shims make an absolute difference.


CZ455-Disassembly and Reassembly

TECH TIP VIDEO by Fieldsports Scotland:
CZ455/452 .22lr full bolt disassembly and reassembly

TriggerShims Logo

TECH TIP VIDEO by Dayattherange:
CZ452 CZ 455 and Lithgow LA101 with TriggerShims.com Bolt Shims

TriggerShims Logo

Day At The Range


Customer TECH TIP VIDEO by Airgunner Bob_O:
CZ457 Head Space Adjustment Using Bolt Shims

TriggerShims Logo

TECH TIP REVIEW:
CZ 455 Varmint Tacticool with TriggerShims.com Bolt Shims

CZ / Brno Rimfire Bolt Shim Target

Lance, your shims are by-far the best bang for the buck in terms of accuracy improvement. I bought a CZ 455 Tacticool and it seemed to like SK Rifle Match but was still very inconsistent. Like most CZ owners, I started with a trigger spring, then bedding. Still no substantial improvement. I upgraded the trigger guard and tried varying baseplate torque values.
Again, no substantial gains. Then I read about your site at Rimfire Central and decided to give your product a try. I went to my local outdoor range, added the .004" shim while at the shooting table and loaded 5 rounds
My 50 yard groups shrunk from +1.5 MOA to sub 1/2 MOA! The enclosed (target) photo is result, the upper-left was the fouling group then it settled-in! Conditions were 3-7mph wind, 98% humidity, 78 degrees @50yds.
Your product is seriously underrated and unknown by most. I guarantee all of my future shooting conversations will include the impact your products have on accuracy.
Sincerely, Fernando in AL


TECH TIP REVIEW:
CZ 457 Failure To Extract

Lance, I’m happy to write a review on the shims that I received. I was having trouble with my CZ 457. It’s a custom build with a Bartlein barrel. It shoots lights out, but I couldn’t get it to shoot more than 60-70 rounds without having a failure to extract, followed by multiple per magazine. I called the builder, and they said to try new ammo. Well, I was already shooting Lapua Center X, and bought 5,000 rounds of it, so I wasn’t about to switch that easy. I have over 1,500 rounds through the gun and it still jams. Yesterday, lost an NRL22 match due to 3 FTEs in one stage that crushed my score. I was fed up with the rifle and ordered a new Proof barrel. On that same day, I received your shims. I found that I can fit a full .007 shims before the bolt was stiff. After I backed it down to the .005 shim, I took it to the range and was able to shoot 350 rounds without a single failure to extract! Definitely cancelling that new barrel! Your shims have saved me $600 and hours of work breaking in a new barrel. Thanks for the great simple product and the easy instructions. I will definitely recommend you to any others having this same problem. Chris in AZ


Customer IAN from New Zeland writes about his Ruger American® Rimfire Long-Range
Good Morning Lance and Tammy,
I have decided to write a small message to regarding my experiences with your shim kit. I had purchased a Ruger American .22 Long Range and to say the accuracy was poor was an understatement. Nothing I did helped much. I did the bedding, Action screw tension, the barrel crown, the trigger, one item at a time with extensive ammunition testing each time to find something it liked. My CZ’s even with ammunition they didn’t like still outshot it. Then I saw the Youtube video by Mr Revolver Guy from Day at the Range and thought ok, lets try the headspace and if that doesn’t work, I will sell it as it’s a dog. I followed the easy instructions and straight away the groups tightened and also it started accepting ammunition it had sprayed around the targets before, every group tightened. Like all 22LR it still has it’s preferences but all the groups are now touching at 50 yards. My thanks to you both, Regards Ian


D in Canada Sends His Before and After Targets
100 Yards with his CZ 452 American

Good Afternoon Mr. Shively, I just wanted to thank you for your excellent service and providing an equally excellent product. My shims arrived in short order and I was able to put them to the test. My groups shooting modestly priced ammo improved dramatically in my CZ 452 American, a rifle that I have been shooting with in Silhouette matches for over 14 years. It was up until now that I have been opting for more expensive Eley for matches, and with shortages in lots, finding difficulty with the 77 and 100 meter targets. I expect to see improvements in my scores and a better enjoyment of match days thanks to your product. Please accept my gratitude and Best Wishes to you and Tammy, D in Canada

D in Canada TriggerShims Logo

Andy in Oz TriggerShims Logo

Targets: 1022

10/22 Targets

Rickey in N.C. 10/22 Target

Our Ruger 10/22 Trigger Shim Kits are used by Hunters and Competitive Shooters alike. The difference made with our shims is a small part of an overall trigger job, but the difference can be as much as 1/2# Reduction in Pull Weight simply with shims.
One Important Key to Good Shooting is a Good Trigger!

Customer Rickey in North Carolina writes;

Lance, took my 10/22 with rebuilt trigger to the range today and ran 5 different ammos through it, see attached photos. The trigger job using your TriggerShims shims and the Wolff springs did wonders for shrinking my group sizes, .231” average for 5 different ammos ain’t bad, all groups are 5 shots at 50 yards. Thanks again for a great product/service!!! Rickey

If you would like to display your target, send an email to Lance@TriggerShims.com


EABCO for your CZ Barrel,
Trigger Parts and Accessory Needs

Have You Tried a Rim Gauge?

Link to Raven Eye Custom Rim Gauges


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