Re: Best bullet for subsonic 308
The 12tw may or may not stabilize for the OP, definitely worth a try.
If it doesn't, then here's a load that works great for a friend with a 12tw, I'd suggest starting 1.0gr higher and working DOWN in 0.2gr increments
9.5gr Trailboss
150gr Winchester Spire Point
OAL @ 2.700" OAL