https://twitter.com/Maks_NAFO_FELLA/status/1754459375710700007
Breech loaded with the tube horizontal...1 round per minute.
The 2S4 has a range of 9.6 km using standard high-explosive rounds, but a range of 20 km using extended-range ammunition.
The extended range ammo is probably in short supply.
9.6 km from the front puts the 2S4 in range of FPV drones.
https://twitter.com/RALee85/status/1754382856057414011