[Tracker]

I just thought I'd share a few 6.8SPC subsonic loads that cycle the action in a 16" barrel with a carbine gas system.
Using 130gr Speer or Sierras -20.1 grs or RE19 hits around 1100fps, your twist and brand of case among other things could effect that vel.
-16grs of Win 748 produced 1142fps which is almost perfect.