The Russians have always been very good a saturation artillery strike, something rather effective at trench lines, troop concentrations, and leveling cities. But far less effective against individual items like tanks
Keeping score on rounds fired means little except tracking ammo usage and barrel burn rate, 100 rounds may not be able to do what 1 precision round can do, and even if you manage to hit the target 100 rounds are gone and the barrels are that much closer to rupture and most certainly range and accuracy are diminished. Not to mention pesky counter battery fire
A lot of lessons are being learned
One of the reasons we are "seeing" the results of counter-battery fire is UKR now has drones that can fly and loiter far behind the FEBA.
One such drone is the Ukrspecsystems MiniShark.
MiniShark specifications:
Length – 1.25 m
Wingspan – 2.6 m
Maximum take-off weight – 5 kg
Flight duration – 2 hours
Radius of combat use – 35 km
Working altitude – 1000 m
Maximum speed – 120 km/h
Payload – an optical-electronic observation complex with
10-fold optical magnification
Operating temperature range – from –15 °C to +45 °C