Contessa Picatinny Rail for Sako TRG 22/42 (20 MOA)

Introduction

Picatinny rail consists of slots with 5.23 mm spaces between one another, which means that it can be used across its entire length. It is simple to mount and interchangeable – if something is made for a Picatinny rail, it will fit regardless of the manufacturer or manufacturing date. It is affordable, resilient and reliable – this is why it so commonly used by professionals and military. Because of all its great qualities, Picatinny rail has been dominating the rail market in the recent years.

Picatinny is a big step forward from the Weaver standard. Weaver has a few predesignated slots while Picatinny has slots all over its surface, allowing the device to be mounted wherever the user finds it fitting. Weaver's slot is 3.8 mm wide, which is why ring mounts made for a Weaver rail will also fit on a Picatinny rail while ring mounts made specifically for a Picatinny rail will not fit on a Weaver rail. This is one of the main reasons why Picatinny is a far better mounting solution.

Contessa is an Italian company, famous for producing aesthetically appealing mounts with a nice finish. The tolerances of the produced pieces are very tight – there are no deviations, the mounts are very carefully machined. Contessa's Picatinny rails are made from steel and come with their unique screws which fit nicely into the rail. The screws have a huge contact surface and a bigger head than screws of other mount manufacturers, while the thread is the same. Contessa's Picatinny rails, made in Italy, are available in both 0 MOA and 20 MOA versions. Throughout the middle of the rail, there is a canal so that the rail can be used together with rifle's sights.

20 MOA Inclination

20 MOA inclination is only needed when the scope runs out of elevation. For example, when shooting at the range of 100 m, shooter gains 58.2 cm / 100 m of additional elevation range with a 20 MOA mount. This is approximately 5.8 Mrad of elevation. To make things even clearer – if the target was placed at 100 m, the scope with 20 MOA inclined rail would aim to the center of the target while the rifle’s barrel would aim 58 cm higher than the scope. This gives the shooter extra elevation needed for long range shooting. If you plan to shoot on distances longer than 600 meters, use of rail with 20 MOA is greatly recommended. There is no negative effect of the inclined Picatinny rail in the mounting setup if you only shoot on shorter distances. The same goes also the other way around, since if you don’t shoot on extreme distances then Picatinny rail with inclination is not needed.

About the rifle

Sako is a Finnish firearm producer located in Riihimäki. After World War 2 they began manufacturing rifles. Their first invention was the model L42 rifle. With time, Sako expanded their production, making more than 40 different models of firearms with various rifle chamberings. The company was owned by a series of various owners – currently, Beretta Holding owns the company. In 2013, Sako reached a new production record of over 100.000 rifles produced.

Sako, models TRG 22 and 42 are Finnish sniper rifles. These successors of TRG 21 and 42 were first introduced in 1999 and are still in production today. Model 22 is chambered in .260 Rem. and .308 Win. while Model 42 is chambered in .300 Win. Mag. and .338 Lapua Mag. Model 22's barrel length is 51 or 66 cm; model 42's barrel length is 69 cm. Barrels are free floating. Latest 42 models have double plungers for more effective cartridge ejection. Both models are extremely effective at very long range shooting and are perfect for competitions. They are equipped with a 16.5 mm dove-tail. For mounting purposes, there are also six mounting holes on the receiver, three at the front and three at the rear. Bolt has three locking lugs and a 60-degree opening angle. The ejection port is located on the right side of the rifle. Cartridges are ejected automatically when pulling the action.

This mount is not meant to be attached to the rifle's dove-tail – it is mounted with 6 screws instead. There are two recoil stops on the mount. At the front, there is a mirage band.

A1: 22 mm
A: 22 mm
B: 65.5 mm
C: 22 mm
C1: 22 mm
D: 16.5 mm
BHU: 0 mm
Fi: M4X6
R1: Flat
R2: Flat

Mounting instructions

Remove all the stains (grease, oil etc.) from the rifle's receiver with a cleaning fluid (acetone). Once the surface is clean and dry, check whether the screws match the rail and the holes on the receiver. Make sure that the Picatinny rail is compatible with the rifle by inspecting the mounting holes on both. Before mounting the rail permanently, apply a minimal amount of thread-locking fluid 278 or 648 on screws and contact surfaces. Be careful not to get the fluid in or near the mounting holes. Carefully clean the remaining excess fluid around the rail with a cleaning fluid. Using a torque driver, screw the screws appropriately (up to 2.2 Nm) – do not overtighten.

Warranty

The product has a warranty period of 30 years.