300 AAC Blackout 188gr Subsonic Load
    Hunting / Self Defense


    Available For Pre-Order  |  Coming Fall 2017


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    Available For Pre-Order  |  Coming Fall 2017

    The Discreet Ballistics 300 AAC Blackout 188gr Selous Subsonic Hunting/Self Defense load was conceived and designed as part of a two load system. This load has been thoroughly tested for functionality with different length gas systems with a suppressor attached. The load incorporates a machined copper 30 Cal projectile (the Selous bullet) which expands at subsonic velocities above 750 feet per second. This projectile was designed using state-of-the-art ballistics modeling software to maximize stability at subsonic velocities. Discreet Ballistics gives its customers the option of choosing these loads for use in 16″ barrels or 7-11” barrels.

    The Two Load System
    The Discreet Ballistics’ two load system was conceived so that the shooter of subsonic ammunition can practice with a less costly Target load, and hunt or defend with a premium Hunting/Self-defense load. Methodical load development by Discreet Ballistics has created a system which will minimize point of impact shift allowing the shooter greater confidence when it’s time to hunt or defend.


    Additional information

    Weight 1 lbs
    Dimensions 7 x 4 x 4 in
    Barrel Length

    7-11" Barrel Length, 16" Barrel Length


    20 Round Sleeve


    Brass: Lapua 300BLK

    Bullet: “Selous” 188 Grain expanding machined copper projectile

    Bullet Ballistic Coefficient: .404G1

    Average Muzzle Velocity: 1050 FPS

    Ballistics Table


    Range Drop Drop Velocity Energy
    (yd) (in) (MOA) (ft/s) (ft•lbs)
    0 -1.5 *** 1066.8 480.0
    25 1.9 7.1 1053.8 468.4
    50 3.3 6.2 1041.4 457.5
    75 2.7 3.4 1029.7 447.2
    100 -0.0 -0.0 1018.5 437.6
    125 -4.7 -3.6 1007.9 428.5
    150 -11.6 -7.4 997.6 419.8

    The Sub Life

    1. Why The Two Different Loads For 300BLK? (8/23/2017) - A fair amount of you have asked me about the reasoning for Discreet Ballistics having two different loads for 300 Blackout. We make a Pistol/SBR load which is optimized for barrels between 7-11” and a Carbine load which is optimized for 16” barrels. The reasons we offer these two different ... | Read More