Seeing that Valda might be in trouble, Jack once again leveled his crossbow at the frenzied bear. He aimed carefully at its throat and fired.
Jack attacks the bear again (no sharpshooter on this attack).
Sneak attack with +1 crossbow: 1D20+10 = [8]+10 = 18
1D8+6+5D6 = [5]+6+[4, 4, 1, 5, 5] = 30