Can World War 2 period sniper rifles go through a armored car?

A "sniper rifle" is simply a rifle of above average accuracy- it has no special power or magic connected with it. It would depend of the type of ammunition used, the distance, angle to the target, and the armor of the armored car. The US 30-06 cartridge, the German 8mm Mauser, and the Russian 7.62x54 cartridge, when using an armor piercing bullet, may penetrate a modest amount of armor at close range.