I've read about snipers during The Battle of Stalingrad and one famous sniper (I didn't know there were famous snipers) Vasily Zaytsev who had a kill count around 240 strapped a Mosin Nagant rifle scope to a PTRD-41 14.5 mm anti-tank rifle for use against Germans hiding behind walls when not firing from windows above. The bullets penetrated the brick easily.