Clearly not sure that they can refurbishes the barrel of these, they are out of production for quite a while. Don't know how many left in good shape. Barrel wear is probably catching up artillery units for other types.The Russian army began to use rare 122 mm D-74 guns. One of the D-74 guns was spotted with the 238th Guards Artillery Brigade. Serial production of D-74 guns began in the USSR in 1956. Presumably, D-74 guns were produced until the mid-sixties. D-74 were exported and were in service with almost two dozen countries. In the 60-90s, they were actively used in various local conflicts. At the same time, serial production was established in China under the designation Type 60.
The use of D-74 guns in the Soviet army ended no later than the eighties. The Russian army also actively uses D-30 artillery guns, but D-74 guns have a longer range, their firing range is up to 23,900 meters. The D-74 uses separate cartridge loading ammunition. The weight of the D-74 gun is 5,500 kg, the aimed rate of fire is up to 7 rounds per minute, the gun is serviced by up to 10 people, the transition time from the traveling to the combat position is up to 2.5 minutes.
If they have ammo stockpiles for these, they could at least be used as stop gap before other are repaired or to man new units.