Might want to look into these... They look NASTY.
I copied this over from another forum.
link
http://forum.accurateshooter.com/index.php?topic=3786033.msg36065225
[quote author=P1ZombieKiller link=topic=3786033.msg36065225#msg36065225 date=1335151292]
I built a 300/221 subsonic gun last year, and now that Texas has passed the approval to hunt game with supressors, I have decided to work on a good load that I could hunt deer with. My gun shoots consistant 1.5" groups at 100 yards, and occasionally will shoot some .50 - .75 groups. While this is not benchrest quality, it's pretty darn good for a bullet only traveling 1050 fps. Since I shoot 200 SMK and 210 VLD's like that, these are not the ideal hunting bullet (not really at all going that slow).
I have done some research on a few other sites, and there are few companies (individuals) making .308 bullets exclusively for subsonic use. I ordered a few, but think I have found the one I want after a few tests this weekend.
Lehigh Defense is the bullet I have choosen to use. I have choosen the 200 grain Maximum Expansion .308 projectile. I just did my first test this weekend, and MAN was I impressed. The bullet weighed 199.9 grains on my scale right out of the box. After shooting this bullet into a 5 gallon bucket full of sand, it weighed 199.6 grains and was .845" after full expansion. Thats 99.9% weight retention and 274% expansion all at subsonic speeds.
Pretty impressive if you ask me. This is their promo pic.
http://lehighdefense.com/ME-Bullets.html
Below is my actual pic from the shot described above.
http://forum.accurateshooter.com/index.php?action=dlattach;topic=3786033.0;attach=886749;image
[/quote]