with different types of armour-piercing anti-tank cartridges. Finding the 12.7x108mm insufficient, they began development of what would become the 14.5x114mm armor piercing round . Famous Soviet weapons designers such as Vasily Degtyaryov and Sergei Gavrilovich Simonov designed rifles to accommodate this cartridge. In 1938, Simonov designed the PTRS-41, a magazine fed,