calorie deficit and building muscle on tren and prop?

[lovbyts]

Regarding tren and prop with the goal to be under 10% bf and still building muscle. Is it advisable to be under 500 on tdee or maintainance?

If you want to drop fat and grow a little or maintain you need to be at TDEE. Being below you will get more lean so your muscles will definitely look bigger but you are most likely going to loose some size.