The 3-bet range condenses to hands that celebrate a 500bb pot; everything speculative flats behind position.
The 3-bet range condenses toward hands that welcome a giant pot; almost everything else that plays well flats. Bloated pots with dominated hands are how 500bb stacks vanish.
A middle open, you in the cutoff. The opener is wider than EP, so 3-bets earn more — but position still says flat the speculative hands.
Assumes a ~4bb open; 3-bet to ~3x the open in position, ~4x from the blinds — larger as stacks deepen.