The Strv 103 has a much longer barreled 105mm cannon at L/62 compared to the standard L/52. this is accounted for in game with the slprrj m/66, which has a higher penetration than the L/52 armed vehicles. this is not the case when it comes to the APFSDS splrrj m/80, which has identical performance in both guns despite the gun on the Strv 103 being more than a meter longer.
This is obviously incorrect, but i haven’t been able to see it addressed anywhere.