I never got to my ultimate ccll because I had to jump to maintenance (due to pregnancy) but I was up to 60 or so net carbs a day and losing no problems. When I jumped to maint. I was still losing at 90 NET carbs (90 net but I was at 120 or so carbs if I didn't subtract the fiber) a day so I had to resort to raising my calories or I would have just kept losing. You might try doing a search, there was a similar poll not too long ago.

Jenn