Sorry for a basic preflop question. BB started off very loose (50% VPIP) at the first few blind levels but at 50/100 tightened up significantly (to like 15%). Since blinds went 50/100 he has basically raised every hand he played. 2 out of the last 3 orbits I was folded to in the SB, raised and he folded.

Call and see a flop here or save the 300 chips for another time? There is 1125 in the pot when it gets back to me.

Poker Stars No Limit Holdem Tournament
Blinds: t100/t200 (Ante: t25)
5 players
Converter

Stack sizes:
UTG: t1455
CO: t1610
Button: t4275
Hero: t4315
BB: t1845

Pre-flop: (5 players) Hero is SB with 6 K
3 folds, Hero raises to t500, BB raises to t800, Hero ????