Pushing BB after SB completes

[housenuts]

I think I do this way too often. It works about 95% of the time though so maybe times like this just happen. Is there a time I shouldn't do this?

PokerStars No-Limit Hold'em Tourney, Big Blind is t400 (4 handed) converter

Hero (t2470)
UTG (t6075)
Button (t1325)
SB (t3630)

Preflop: Hero is BB with 2[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, SB completes, <font color="#CC3333">Hero raises to t2445</font>, SB calls t2045.

Flop: (t4765) J[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>

Turn: (t4765) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>

River: (t4765) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: t4765