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BRNO Effect

The History of Brno

The history of the Brno company or Czechoslovak Armory (Československá zbrojovka) as it was known prior to WWI, began in the city of Brno in the Czech Republic, formerly known as Czechoslovakia. In 1918, the Brno Rifles factory was established. Before 1918, Brno Plant was an arsenal located in the Austro-Hungarian Empire. Brno started producing Mauser 98 rifles in 1920 after buying excess weapons and equipment from Mauser-Oberndorf. These Brno-produced Mausers had a 98/22 designation stamped onto the receivers marking the year of production.

In the period between WWI and WWII, Brno collaborated with the Royal Small Arms Factory in Enfield, England to develop a well-known Bren light machine gun. They produced weapons for the Czechoslovakian and German armies during World War II. After the war, the company was nationalized by the Czechoslovakian government and renamed Zbrojovka Brno. While it was under socialist control until 1989, it switched to the production of sporting weapons which quickly gained a reputation for their reliability. For some time, the company also produced light artillery and several other products such as tractors, typewriters, and early computers.

During the years they presented numerous models of weaponry such as the ZB vz. 26 light machine gun, ZB-50 heavy machine gun, the MG34, several bolt action rifles, ZKM and ZH series, ZKR 551 handgun etc.

The company was privatized in 1990, just three years before Czechoslovakia split into the Czech Republic and Slovakia. Zbrojovka Brno was acquired by Česká zbrojovka (CZ) in 2008. With the new ownership, they agreed to a longer lease, which allows the business to continue production in rented facilities. They still make high-end products for hunting and competition, including pistols, single-shot and double rifles, combination rifles, as well as over/under shotguns.

Brno Effect Rifle Review

The Brno Effect is a break-barrel, single-shot rifle that has been manufactured by the renowned Czech firearms company, Brno, and later distributed to the USA by CZ-USA. With its classic European hunting rifle profile, the rifle is ideal for a variety of outdoor activities such as shooting sports and small game hunting. Made with an ergonomic design in mind, the Brno Effect rifle features a free-floated barrel which helps reduce vibrations and improve accuracy when firing. The rubber recoil pad is designed for comfort and ease of use when firing rounds.

The safety switch is conveniently located on the action tang and can be manually set from safe to fire position with a simple pull-back or push-forward operation. This rifle is equipped with an adjustable trigger which is adjustable, helping the user determine the desired weight of the trigger pull for each shot. Preinstalled iron sights are included with this model which are adjustable for windage. They can be easily removed and swapped for optics instead. There is a 14.5 mm flat top dovetail on the top of the receiver which is suitable for scope mounts.

Overall, the Effect is known for its accuracy and punch as well as its ergonomic elegance that allows shooters of all skill levels to have a great time while out in the field or at the range. The Brno Effect combines high performance with dependability, offering the most for its class.  

Brno Effect rifle

Figure 1: Brno Effect rifle, chambered for .243 Win. (Source: https://www.chassons.com/armes-et-munitions/brno-kipplauf-effect-cal-243-winchester/65699/)

Brno Effect Calibers

The rifle is chambered for the following calibers:

  • .243 Win.

  • 6.5x57 R

  • 7x65 R

  • .308 Win.

  • .30-06 Spr.

  • 8x57 JRS

Brno Effect Variants

Brno Effect is available in the following variants:

  • Brno Effect Lux

  • Brno Effect FS

Brno Effect rifles come with milled 14.5 mm dovetail grooves at the top of the receiver which are suitable for installing scope mounts.

The receiver of the Brno Effect

Figure 2: The receiver of the Brno Effect, chambered for .308 Win. (Source: https://www.guns.com/firearms/rifles/single-shot/cz-brno-effect-308-win-single-shot-single-23-5-barrel-used?p=493263&soldout=1)  

 The mounting surface of Brno Effect rifle

A: /

B: /

C: /

D: 14.5 mm

BHU: 0 mm

Ø: /

R1: Prisma 14.5/60°

R2: Prisma 14.5/60°

Scope Mounts Interchangeable With Brno Effect

Rifles That Have One-Piece Scope Mounts Interchangeable With Brno Effect

For one-piece mounts to fit on a rifle, mounting surfaces on these rifles must match in every dimension. Rifles that have one-piece mounts interchangeable with Brno Effect are the following:

Rifles That Have Two-Piece Scope Mounts Interchangeable With Brno Effect  

For two-piece mounts to be interchangeable, the mounting surfaces of the rifle must match in every dimension except the action length which can vary. Rifles that have two-piece mounts interchangeable with Brno Effect are the following:

Best Scope Mounts for Brno Effect

Fixed Scope Mounts for Brno Effect

This fixed scope mount manufactured by the Czech company Kozap is made of high-quality steel and will fit the mounting surface of your rifle perfectly.

Detachable Repeatable Scope Mounts for Brno Effect

If you are looking for a detachable mounting solution to fit your rifle, we recommend this Contessa QR mount. It is made of high-quality steel and comes with a thirty-year warranty.

Help Us Build Our Riflescope Mounts Database

If you happen to own this or any other rifle, we would appreciate it if you could help us expand our database by sending us some photos of the rifle receiver (the bare mounting surface of the rifle without the scope mounts installed). For your help, our company offers a fair return in terms of practical rewards.

Please send us an email for more information. You can contact us here: [email protected]  

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VIDEO

Introduction

In recent years we can observe that a trend of Picatinny rail has become widespread and global. It is driven by the NATO standardized rails, more commonly known as the Picatinny rail standard. Picatinny rail being the New Jersey Arsenal that developed it in 1995.

These mounting options are revolutionary. The biggest and best advantage being that the Picatinny rail can be used its entire length and not bordered to a few pre-designed slots like for example the Weaver rail standard was before.

The other main advantage is the ease of use and interchangeability. If a product is meant for a Picatinny rail design it will fit all Picatinny-rails, no matter the manufacturer or date of production.

Picatinny/Weaver Rail

Picatinny Rail and Weaver rail profile

Design

The Picatinny rail is almost exclusively crafted from a single piece of metal (in some cases aluminum). In this manner, the axis of the Picatinny rail is perfectly straight and aligned with the axis of the firearm. Therefore the rifle scope which is mounted onto this kind of configuration is certainly aligned with the rifle / gun and the trajectory of the ammunition.

Weaver rail design on the other hand is usually manufactured in two separate pieces, greatly increasing the possibilities for the axis to be crooked, overlapping, and out of line.

It is always harder to align two separate pieces to a third line than it is to align one piece to another. In this way, the lapping of two mounting rings on a single-piece Picatinny rail is no longer required.

The single-piece rail will assure that both rings are perfectly aligned to each other and that no unwished stress is transferred to the riflescope.  

Picatinny compare to Weaver Rail

The Picatinny rail itself is an evolutionary step forward from the older Weaver rail. The main difference between Picatinny rail and Weaver rail is the spacing of the slots. Picatinny rail design has them evenly placed exactly 5.23 mm from one slot to the other, 3 mm deep. For this reason, the mounting options are repeatable and the same as other firearms using the Picatinny rail standard.

Interchangeability was a major driving force in the development of the new standard as different NATO armies need to be compatible with each other.

Weaver rail has 3.8mm wide slots and these slots can be placed anywhere on the Weaver rail and in any number that the producer wished.

Advantages of Picatinny design

A big advantage for using the Picatinny rail design is the ever-present recoil stop. Furthermore, the manufacturing of the rail is not very technically demanding and can be done without the use of state-of-the-art machines which greatly reduces the cost of the finished product, making it very affordable.

The Picatinny rail is easy to mount and usually, this type of configuration does not transfer negative stresses and forces from the fired weapon to the rifle scope.

In addition, the Picatinny rail with its very long useable surface works well for mounting longer rifle scopes or to achieve optimum eye relief.

The durability and toughness are other big pluses for this solution.

Manufacturers of Popular Models

A majority of the Picatinny rings are fixed, but a number of best rated European manufacturers (EAW, MAK,..) have, in recent years, put a lot of effort into the development of detachable ring with100% repeatability, with which it becomes easy to remove the scope from the weapon without the use of tools.

No re-zeroing is needed with such mount options, but these models tend to be expensive. 

Weaver and Picatinny Rings

Picatinny rail and weaver rail share one more thing. It is possible to use the Weaver ring and the Picatinny ring on the Picatinny-rails, but it is usually impossible to use the Picatinny ring on the Weaver base. The reason being the above-mentioned positioning and spacing of the slots.

  • Picatinny mounts have a 5mm recoil stop that goes into the rail slot and since
  • Weaver rail only has 3.8mm wide slots such rings do not fit on Weaver rails.

Due to this reason, the Picatinny-rails are popular and prevailing on the market in recent years and eventually, these options will completely oust the Weaver rail from the market.