If you're using reduced loads and 125gr bullets - look at the velocities the 300 Blackout produces, and it's results on deer with 125gr bullets. I don't have first hand experience with the 125 SST, but the 125 Nosler BT works great for deer at 300 Blk speed (~2200-2400 fps) and would make a great reduced load for your 308. There are several other good choices too.
