Good evening folks

Im looking for a little advise from you clued up people im very much new to air gun scope set up so was wondering if you can help me!! I was trying to set my rifle up up but wondered if im doing it right?

I was told the best distance to light the scope up is 20yards (60ft) as this gives you good short and long range is this true? Thats kinda what i want so i dont have to keep adjusting the scope! I put the target 10yards and adjusted windage until i was centre need to do the elevation yet..

Any help would be great guys

Thanks..