I'm always searching for the best ammo for my SBR and most of the guys I work with either run one of 2 loads––-Speer Gold Dot 64gr (or the Fusion 62 version) or the MOD 0 load we're testing here today. Both loads are recommended by Dr. Roberts and are probably good choices for a rifle (SBR) that is already compromising muzzle velocity due to the short barrel.
Here's the chrono test I ran to document the real world results:
MK 318 CHRONO TEST HD VIDEO LINK
Chrono data: 2617fps, 943 ft/lbs energy.