[vers]

You should be doing whatever you do with your entire re-raising range here, so if you're going to re-raise KK to 600, re-raise to 600 w/ AK as well. This doesn't matter as much vs unknowns but regs will pick up on this.

For the particular hand, he 2.5x raise looks a little trappy and I would think that he'd be content to get it in here pf. I would just be shoving to make your hand look weaker than it is. I think it'd be pretty rare that a villain would call 400 more but not a shove so shoving has more value I think.