STEADFAST .300 BLK 220gr HPBT SMK Subsonic is constructed utilizing a Sierra Matchking hollow point boat tail projectile loaded in new brass casings.

Velocity: ~1000 fps in a 16 inch bbl with 1:8 twist / ~900 fps in a 16 inch bbl with 1:7 twist

Cycles most factory semi-auto rifles.

BC: G1=.608

These rounds of ammunition are BLEMS. They may have cosmetic defects such as surface scratches, dings or light tarnish. These cosmetic defects do not affect performance.

Recommended for barrels with a twist rate of 1:8 or faster – e.g., 1:8, 1:7, 1:6, 1:5
Slower twist rates (e.g., 1:9, 1:10) may under-stabilize the bullet and inhibit accuracy.