Understanding 300 BLK Dimensions: A Comprehensive Guide

The 300 AAC Blackout (300 BLK) has gained immense popularity among firearm enthusiasts due to its versatility and performance. Designed for both supersonic and subsonic loads, the 300 BLK offers a wide range of applications, from hunting to tactical operations. To maximize the benefits of the 300 BLK, it is crucial to understand its dimensions and specifications as defined by the Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI).

Key Dimensions of the 300 BLK Cartridge

The 300 BLK cartridge was developed to offer enhanced performance while maintaining compatibility with the standard AR-15 platform. Here are the critical dimensions and specifications of the 300 BLK cartridge as per SAAMI standards:

Cartridge Overall Length (OAL)

The overall length of the 300 BLK cartridge is a crucial measurement for ensuring proper feeding and chambering in firearms. According to SAAMI specifications, the maximum cartridge overall length (OAL) for the 300 BLK is 2.260 inches (57.40 mm).

Case Length

The case length of the 300 BLK is designed to work efficiently with both supersonic and subsonic loads. The SAAMI-specified case length for the 300 BLK is 1.368 inches (34.75 mm).

Case Diameter

The base diameter of the 300 BLK cartridge case is designed to be 0.376 inches (9.55 mm), while the neck diameter is 0.334 inches (8.48 mm). These dimensions ensure compatibility with standard 5.56 NATO magazines and AR-15 bolt faces.

Bullet Diameter

The bullet diameter for the 300 BLK is specified by SAAMI to be 0.308 inches (7.82 mm). This allows the use of a wide variety of bullets, ranging from lightweight supersonic projectiles to heavy subsonic ones.

Shoulder Angle

The shoulder angle of the 300 BLK case is 17.5 degrees. This angle contributes to reliable feeding and extraction, ensuring smooth operation in semi-automatic firearms.

Pressure

The maximum average pressure (MAP) for the 300 BLK cartridge is specified by SAAMI to be 55,000 PSI (pounds per square inch). This pressure rating ensures the safe and effective performance of the cartridge in properly designed firearms.

Faxon Firearms and the 300 BLK

At Faxon Firearms, we understand the importance of precision and reliability in firearm components. Our 300 BLK barrels are meticulously crafted to meet and exceed SAAMI specifications, ensuring optimal performance and safety. Whether you're building a new rifle or upgrading an existing one, our 300 BLK barrels offer exceptional quality and accuracy.

Key Features of Faxon Firearms 300 BLK Barrels:

• Precision Machining: Manufactured with tight tolerances to ensure consistent performance.
• Material Quality: Made from high-grade materials for durability and longevity.
• Compatibility: Designed to work seamlessly with standard AR-15 components.
• Versatility: Suitable for both supersonic and subsonic loads.

Conclusion

Understanding the dimensions and specifications of the 300 BLK cartridge is essential for anyone looking to maximize the performance and safety of their firearms. By adhering to SAAMI standards and using high-quality components, you can ensure reliable and effective operation.

Disclaimer: Always check official SAAMI specifications, specifications of ammunition manufacturers, and specifications of any part being used in your 300 BLK build. Adhering to these guidelines is crucial for ensuring the safe and effective performance of your firearm.

For those seeking top-tier 300 BLK barrels, Faxon Firearms offers products that meet the highest standards of quality and precision. Trust Faxon Firearms for all your firearm needs and experience the difference that superior craftsmanship can make.