I'm amazed all the SST haters didn't respond! I've used 130 gr SST out of a .270 to kill a bunch of deer and antelope. Accurate and deadly. Never had to fire a second shot. My longest kill was 525 yards. I would think the SST will work just fine in your 6.5. By the way, the bullet was leaving the muzzle at 3050 FPS, so not the hottest load out there.
"You can fly a helicopter to the top of Everest and say you've been there. The problem with that is you were an a$$hole when you started and you're still an a$$hole when you get back.
Its the climb that makes you a different person". - Yvon Chouinard