SIG Sauer 120gr Tactical Rifle SBR Solid Copper

SIG Sauer's 120-grain Tactical Rifle SBR load in .300 AAC Blackout uses solid copper construction for maximum weight retention and controlled expansion. Unlike traditional jacketed lead bullets that can shed jacket material on impact, the monolithic copper projectile maintains its structural integrity throughout penetration, delivering consistent terminal performance across a wide range of impact velocities. This makes it particularly effective from the shorter barrels commonly paired with .300 Blackout platforms.

The 120-grain bullet weight strikes an optimal balance between velocity and mass for short-barrel supersonic .300 Blackout applications. SIG lists the SBR Elite Copper Duty load at 1,897 fps and 959 ft-lbs from a 6.75 inch barrel, which is the kind of barrel length this product was built around. The all-copper design is engineered for controlled 1.8x expansion and superior feeding from sub-9-inch rifles.

The ammunition is loaded to consistent velocities with flash-reduced propellant, and the brass cases are precision-manufactured to support reliable feeding and extraction across AR-pattern platforms. For defensive, hunting, or lead-free applications where short-barrel performance matters, SIG's 120gr SBR solid-copper load is the right product identity to track.