Not interested in debating the merits or stupidity of the idea. I'm asking because I ran into a couple of guys at the range working up sub-sonic .308 reloads in anticipation of getting their suppressors in another half year Their "rainbows" were mostly connecting at 300 yards on the steel plates so I'd say they had the loads worked out pretty good. What I'm asking about is what barrel twist would be required to insure adequate "initial stability" to insure no baffle strikes when they get their new cans? If a "standard" .308 twist barrel is fine they will be thrilled, if not, the wisdom and experience here could save them a lot of grief when their wait is finally up! I was hit with the "initial stability" issue with a .22lr suppressor and the Aquila 60gr "sub-sonic" ammo causing a baffle strike. Not catastrophic, but not a happy day at the range either.