I use to play apd plus leaded to tsonga specs and it's a log to serve with but once you connect it splits the ball in half.
It definitely takes two layers (0.5 mm thick) 10-12 inches of gamma lead tape to get there
rest is silicone in one chamber to get to desired weight and balance (15gr usually).
Reason it's not exact science is due to wonderful -+7 Babolat quality control which they actually state on the racquets themselves as a genius disclaimer like it's normal
Length: 69.9 cm
Weight: 346gr (strung, dampener, without overgrip)
Balance: 33.1 cm
Gripsize: #4 (4 1/2)
Silicone in handle