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CZ 550 Scandinavia

About the CZ

CZ firearms or CZ (which stands for Česká zbrojovka) is based in Uhersky Brod, a small town in the southeastern Czech Republic. CZ has its start in 1936 as a subsidiary of CZ Strakonice, which was itself a subsidiary of Zbrojovka Brno. The arms industry was growing quickly in Czechoslovakia at the time, and Uhersky Brod was chosen since it was secluded and lay beyond the range of German bombers, which, in case of an invasion, would target the arms factories first. The factory initially mostly produced pistols and small-caliber rifles; however, when German forces occupied Czechoslovakia in 1939, the company was renamed to Böhmische Waffenwerke and was forced to make machine guns, such as LK-30 and MG-17, for the German military.

After the end of World War II, the Soviets gained control of the region and the company was nationalized by the communist government, producing air weapons, machine guns, submachine guns, motorcycle and sewing machine parts. In 1957 the company started production of the Model 58, and in 1961 they introduced the world-famous Model 61 Škorpion machine pistol. The year 1975 marked the release of yet another popular model, the CZ 75 pistol which many manufacturers have since used as basis for their own products.

CZ once again became an independent company in 1992 following the fall of the Soviet Union. In the decades after, they have continued production of a variety of weapons seizing the market of law enforcement and military firearms with service pistols, assault rifles and grenade launchers with which they also helped equip the Czech army. They have strived to widen their presence on the international markets, opening a facility for assembly and repairs of CZ pistols in Peru and spreading production of their firearms (certain models of the CZ-P10 pistol) to the United States in 2019. As of 2021 they employed around 1500 workers.

CZ 550 Scandinavia Rifle Review

CZ 550 is a civilian bolt-action rifle designed after the famous Mauser Karabiner 98k and was first introduced in 1997 when it replaced CZ 537. Its controlled-feed action system is made of high-grade steel and features a bolt with 3 locking lugs: two main lugs at the bolt head and a third safety lug underneath the bolt handle which acts as backup, providing further safety. To the right of the receiver are an emergency gas pressure release valve and a horizontal two-position safety catch, which locks the bolt and sear. It comes equipped with a single set trigger which can be pushed forward to reduce trigger pull. CZ 550 Scandinavia differs from other CZ 550 models only in that it has a raised back to its stock and mounting holes instead of a dovetail. It houses a medium size action.

Cz 550 Scandinavia

Figure 1: CZ 550 Scandinavia .30-06 Spr. Source: https://www.lavetrinadellearmi.it/it/arma-lunga/canna-rigata/cz-ceska-zbrojovka-cz-550-scandinavia-i-503847.html

CZ 550 Scandinavia is chambered for the following calibers:

  • .243 Win.
  • 6.5x55 SE
  • .270 Win.
  • .308 Win.
  • .30-06 Spr.

CZ 550 Scandinavia features 4 mounting bores and no dovetail.

Cz 550 Scandinavia

Figure 2: CZ 550 Scandinavia receiver. Source: https://balkanhunter.rs/wp-content/uploads/2021/03/Slika-5.jpg

Skica dimenzij

Figure 3: CZ 550 Scandinavia receiver

A: 21.9 mm
B: 98.6 mm
C: 15.3 mm
BHU: 3 mm
Ø: 6-48
R1: R60
R2: R17

Which rifles have interchangeable mounts

Two-piece mounts

For two-piece mounts to be interchangeable the mounting surfaces of the rifles must match in every dimension except the B dimension which can vary. This is because the distance between the two pieces of the mount is not fixed. Rifles that have two-piece mounts interchangeable with CZ 550 Scandinavia are the following:

  • BSA Repetierer
  • Churchill Highlander
  • Sabbati Rover
  • Weatherby Mark V Standard
  • Weatherby Mark V Magnum
  • Weatherby Vanguard
  • Weatherby Europa
  • Weatherby 300
  • Howa 1500 LA
  • Howa 1500 Mini

One-piece mounts

The necessary condition for rifles to have one-piece mounts interchangeable is that the mounting surfaces of these rifles match in every dimension. Rifles that have one-piece mounts interchangeable with CZ 550 Scandinavia are the following:

  • Howa 1500 SA
  • Weatherby Vanguard SA

Our recommendations for mounts

Fixed mounts

This fixed Talley mount is the only option available for CZ 550 Scandinavia.

Detachable repeatable mounts

The only option here is this Rusan pivot mount.

Picatinny rails

This rail from Rusan is the only option.

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 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: info@optics-trade.eu

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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.