Yea now looking back, I have no idea why I didn't raise his turn bet. It was the 6's that scared me and partially because the 3x raise could have left him in with K6, A6, etc... I think I let the position scare me as I was out of position when I raised. The table was kinda tight though and there was a very high chance that everyone would have folded to a 6x bet preflop.