He's running 65/17 with 6.9 3bet. I've seen him min 3bet before but he doesn't do it all the time. I haven't seen him show down one of those hands.

The stack sizes made this hand awkward for me. If I should be 4-betting, how much do I make it?

No-Limit Hold'em, €0.50 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

Hero (CO) (75.35)
Button (50)
SB (50)
BB (147.25)
UTG (53)
MP (58)

Preflop: Hero is CO with Q, Q
2 folds, Hero bets 1.50, 2 folds, BB raises 2, Hero ?