I have 50gms carbs (white rice) 2 days a week. Thats no carb up LOL The rest of my meals are protein and fat all farm raised grass fed organic meat, high fat stuff for the most part, but its full of good fats I even eat bacon regularly. Avocados, olive oil on salads, raw nuts.
If your running an androgen which will protect muscle you can really cut cals pretty low without loosing muscle, the issue is we lose water and fat and think its muscle..its not. However you will get a little stringy in the process.

Carbs in high doses make me feel like shit doesn't matter where they come from. I feel better when I only eat them at night.

Im trying to really cut before my next blast right now and Im down from 250 to 225 as of today. Its been about 5 weeks.