If I remember correctly, Oswald used a POS 6.5 Carcano rifle with a scope that was loose and barely attached. Also, three NRA experts could not recreate the shot. Oswald barely qualified with a rifle when he was in the Marine Corps.
The scope mount would make two hundred yard shot unlikely. But Oswald’s third and longest shot was less than 82 yards. That distance would not be very challenging for a scoped hunting handgun with solid support.