Atomic Ammunition 300 Blackout 260gr Subsonic RNSB 20rd Box

The Atomic Ammunition 300 Blackout subsonic load delivers quiet performance without sacrificing terminal effectiveness. This 260-grain round nose soft point boat tail configuration provides optimal expansion while maintaining subsonic velocities for suppressed shooting applications.

What Makes This Different

This subsonic ammunition stays below the sound barrier at approximately 1,050 fps, eliminating the supersonic crack that standard loads produce. The heavy 260-grain projectile maintains energy downrange better than lighter subsonic options. The round nose soft point design ensures reliable feeding in semi-automatic platforms while the boat tail configuration improves ballistic coefficient for better long-range performance.

Key Features

• 260-grain round nose soft point boat tail projectile for controlled expansion
• Subsonic velocity around 1,050 fps eliminates supersonic crack
• Optimized powder charge for consistent cycling in gas-operated rifles
• Boxer-primed brass cases suitable for reloading
• 20 rounds per box, 10 boxes per case (200 total rounds)
• Compatible with standard 300 Blackout chambers and magazines
• Manufactured to SAAMI specifications for reliable performance

This ammunition excels in suppressed rifle applications where noise reduction is critical. The heavy bullet weight provides adequate energy for hunting medium game at close to moderate ranges. Law enforcement and military users appreciate the reduced noise signature for tactical operations. The consistent powder burn ensures reliable cycling in AR-15 platform rifles and other semi-automatic systems chambered in 300 Blackout.

Technical Specs

• Caliber: 300 AAC Blackout (7.62x35mm)
• Bullet Weight: 260 grains
• Bullet Type: Round Nose Soft Point Boat Tail
• Muzzle Velocity: Approximately 1,050 fps
• Case Material: Boxer-primed brass
• Packaging: 20 rounds per box, 10 boxes per case
• Overall Length: 2.260 inches (SAAMI maximum)
• Manufactured in the United States

This subsonic load represents the optimal balance between quiet operation and terminal performance for 300 Blackout applications. The precision manufacturing ensures consistent velocities and reliable function across various rifle platforms. Professional shooters choose this ammunition when suppressed performance matters most.