I have a Tasco 3-9 Wold Class Plus that has been on the same rifle for more than 20 years, has traveled from Oz to the US twice and several internal flights within Oz, plus oodles of road travel within the US. The rifle is on its second barrel and around 6000 rounds total and never changed sighting with either barrel on either continent.
The World Class Plus and the Titan, were Tasco's premier Japanese made scopes.
John
