They are claimed and supposed to be 180 degrees
"Standard servo motors have 180 degree range almost universally" "I believe 180 degrees is a universal standard."
Surely one expects to be close to those limits???
Is your application dependent on having 180 degree rotation?
i think servos should be never turn by hand especially mini servos because the inner gears are very easy to break/misplace and the teeth of the gears are also very fragile. I am telling this because i just broke my mini servo (plastic gears are broken, motor still works)