K-77M dual pulse tested twice by oct 2020 for su 57 and got another ramjet in development Izdeliye 180-PD.Their aim 120d has range more than 160 km already. They were content with it since only Europeans had longer ranged meteor. Russian only have r37 m which is more of awacs killer due to its size and weight.
Now owning to chinese competition their are developing two programs aim260 and long range engagement by Raytheon.
Let's see what technology they come up with . But for now meteor and sfdr reign supreme.
Two new videos show that progress is being made in fielding new long-range weapons for the Russian Aerospace Forces.