7 x 33 Sako Load Data & Reloading Guide

Rifle

Also known as: 7x33 Sako, 7×33mm Sako, 7mm Sako

About 7 x 33 Sako

The 7 x 33 Sako cartridge was developed in Finland in the late 1940s by the firearms manufacturer Sako. Originally intended for use in hunting small to medium game, this caliber was designed during a time when Finland sought to produce effective and versatile ammunition for both civilian and military applications. The cartridge gained a reputation for its adaptability in densely forested hunting environments, especially for species like capercaillie and grouse.

Technically, the 7 x 33 Sako is a bottlenecked centerfire cartridge that generally uses a bullet diameter of 0.284 inches (7.2 mm) and a case length of 33 mm. This caliber is known for its relatively moderate powder capacity compared to other rifle cartridges, providing a balanced combination of speed and manageability. Typical bullet weights for this caliber range from 70 to 90 grains. Despite its compact size, it achieves muzzle velocities in the range of 2400 feet per second, offering respectable accuracy and sufficient energy transfer for its intended range and game.

Ballistically, the 7 x 33 Sako offers efficient performance at close to moderate ranges, making it ideal for hunters targeting game within 100 to 150 yards. The straight trajectory and effective stopping power contribute to its popularity in hunting small game and varmints. For reloaders, this caliber presents significant advantages such as flexibility in bullet selection and customization of loads for specific hunting or sport shooting needs. Its moderate recoil makes it favorable for shooters seeking manageable performance without excessive wear on firearms, ensuring longer lifespan and reliability.

The 7 x 33 Sako remains a niche caliber, appreciated by dedicated hunters and sport shooters who value its balance of performance, history, and adaptability. Reloaders can fine-tune the ammunition to optimize performance for specific rifles or shooting situations, leveraging the caliber's inherent versatility to meet individual preferences or challenging hunting conditions.

Technical Drawing

7 x 33 Sako technical drawing and load data

Technical Specifications

Maximum Pressure:40611 PSI / 2800 bar
Case Volume:23 Grains of Water
Primer Size:Small Rifle (SR)
Safety Standard:C.I.P.
Bore Area:40.15 mm²
Barrel Diameter:0.284" / 7.2 mm
L3:1.312" / 33.3 mm
L6:1.75" / 44.4 mm

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Standard Load Data — 7 x 33 Sako

Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.

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100 gr
105 gr
108 gr
110 gr
115 gr
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130 gr

Frequently Asked Questions

The maximum pressure for 7 x 33 Sako is 40,611 psi | 2,800 bar.

7 x 33 Sako typically uses a Small Rifle (SR) primer.

The case capacity of 7 x 33 Sako is approximately 23 grains of water (H₂O).