Sellier & Bellot 300 Blackout 147gr FMJ Ammunition - 20 Rounds

The Sellier & Bellot SB300BLKB delivers consistent subsonic performance for 300 Blackout platforms requiring reliable cycling and accuracy. This 147-grain full metal jacket ammunition provides the heavy bullet weight needed for optimal subsonic velocities while maintaining excellent terminal ballistics.

What Makes This Different

Sellier & Bellot's 147-grain loading sits in the optimal weight range for 300 Blackout subsonic applications, typically achieving velocities around 1,000 fps from standard barrel lengths. The full metal jacket construction ensures reliable feeding in semi-automatic platforms while providing consistent expansion characteristics. European manufacturing standards deliver ammunition that meets stringent quality control requirements, resulting in tighter velocity spreads than many domestic alternatives.

Key Features

• 147-grain full metal jacket bullet optimized for subsonic velocities
• Boxer-primed brass cases suitable for reloading applications
• Non-corrosive powder and primer formulation
• 20-round packaging ideal for range sessions and function testing
• Compatible with all 300 Blackout chambered firearms
• Consistent powder charges for reliable cycling in gas-operated systems
• European manufacturing with ISO quality certifications

This loading performs exceptionally well in both bolt-action and semi-automatic platforms, making it suitable for precision shooting, hunting applications, and tactical training. The subsonic velocity profile reduces noise signature when used with suppressors while maintaining effective terminal performance at typical engagement distances. The heavy bullet weight provides excellent penetration characteristics and wind-bucking ability compared to lighter 300 Blackout loadings.

Technical Specs

• Caliber: 300 AAC Blackout (.300 BLK)
• Bullet Weight: 147 grains
• Bullet Type: Full Metal Jacket (FMJ)
• Case Material: Reloadable brass with Boxer primer
• Muzzle Velocity: Approximately 1,000 fps (16" barrel)
• Quantity: 20 rounds per box
• Country of Origin: Czech Republic
• Non-corrosive, non-mercuric components

Sellier & Bellot's reputation for consistent manufacturing tolerances makes this ammunition a reliable choice for shooters requiring predictable performance. The 20-round count provides an economical option for testing compatibility with specific firearms before committing to larger quantities.