Adjusting to BM ring games (vs online)

The 1-2NL BM ring games seem to play very differently than online. People routinely raise > 5xBB and get called by 3-4 players. Then, in order to push out draws, the raiser must bet large amounts -- and, vs. 4 other players, the likelyhood of someone hitting their cards is much higher.

Using the tight-aggressive strategy, I've been winning small pots and losing medium ones. I'm not sure how to adjust my play for BM games. Any advice is appreciated.