Thread: 7mm08 subsonic load

+1 for trailboss.

To work up a Sub load, remember to start high and work down. Be sure projectile has left the barrel before sending the next one.
You'll also want to use brass that's already been fire formed in your rifle and just neck sized, ... sub loads aren't good at chamber forming new or FL sized brass can result in poor gas seal.

I've tried using 140gr SGKs . . .at sub speeds 1/9.5 twist 20'' barrel . . .wouldn't stabilize, key-holing target at 25m.

A 140gr pill that leaves the barrel at say 1070 fps has muzzle energy of just 356 FT-LB . . . your call on how useful that might be in your use case.
(Head/neck shots at bow hunting ranges ?)