Just wasn't easy to get there.
Reduced loads, yeah. But subsonics with the heavies just didn't work out. And when I got them sub-sonic, they weren't stabilizing in an 8" twist. The lighter stuff was ok at shorter ranges, but otherwise sucked and wasn't worth the effort to me.
I ended up using the .308 for sub and super sonic stuff and it has worked really well for me.
Travis
And the Blackout has the twist for it, and companies have developed bullets specifically for this purpose as well.