This had been rectified before the Continuation War and the Finns equipped the 10th Separate Super-Heavy Artillery Battery with them for the duration of the war. The Swedes had their own concrete-piercing shells, called 210 tkrv 51/65-ps R-/33 by the Finnish army, weighing , which had dispersion problems as the Finns found out.
Before the Continuation War was concluded, this problem was addressed. The Finns installed these shells in the 10th Separate Super-Heavy Artillery Battery for the duration of the war. The Swedes had concrete-piercing shells known as 210 tkrv 51/65-ps R-/33 by the Finnish army, weighing , which exhibited dispersion issues that were recognized by the Finns.