Buy Shooters World SBR Socom D063-01 Smokeless Gun Powder Online.  SBR Shooting World Socom D063-01 Smokeless Gun Powder has no analogue in reloading propellants. It burns more quickly than ACCURATE 1680 but more slowly than Winchester 296 or Hodgdon H110. The propellant gas production rate is suitable for.300 Blackout, 7.62×39, straight-walled rifle cartridges, and particularly.458 SOCOM cartridges where quick powder-to-gas transformation is necessary. SOCOM is highly effective as a SINGLE propellant for both subsonic and supersonic.300 Blackout applications. In subsonic applications, it has less residue than 1680, while it excels 296 in supersonic applications. Its subsonic performance with a 220 grain Sierra Match King is flawless. But it really excels when loaded with a 150-grain FMJ or hunting bullet. SOCOM may be utilized to approach the velocity of a.30-30 Winchester with the same barrel length, but other propellants leave the.300 Blackout with a 150-grain bullet at best anemic. Given the tiny cartridge, the energy level of a 150-grain bullet traveling at 2,150 feet per second from a 16-inch barrel is extremely astounding. Buy Shooters World SBR Socom D063-01 Smokeless Gun Powder Online.