New Cold War 2020 mod release! (RC 0.4)

[Marcello]

"Re. 152mm, we shall see if the Russians are heading anywhere like this in the real world. AFAIK no country has actually got anything beyond the 120/125 standard in service, despite numerous design efforts (Leopard-2KWS3, Leclerc, K2, Merkava-Mk4...) so the need isn't that appalling, and real-life Russians have enough work catching up on APFSDS technology and maybe transitioning to one-piece ammo (qv Black Eagle) before doing anything silly."

I have to disagree to a certain extent. No country has gone from 120/125 to 140/152 because of the post cold war circumstances. You don't need a 140mm to deal with some arab T-72M1. 152mm guns on the other hand were not fielded because they were unaffordable under the economic conditions prevalent. If, on the other hand, one is assuming an ongoing Cold War and a healthier eastern economy things get very different. The 125mm are in trouble against western third generation MBTs, while the 120mm may be insufficient against the soviet fourth generation monsters. Whether the 135mm or the 152mm are chosen may come down to MIC politics.
Although the soviets were originally heading to a dead end regarding APFSDS design, items like the BM-46 show that they have learned quickly and do not have all that to catch up.