personaly ;I get myslef a scope like's on my big game rifle,(then they are all the same to the eye) I sight in all at 25 yards,and you can still hit at 50 if you shoot enough to see where it hits. most shoots will be at 25 to 35 anyway.

shoot a lot to see how your gun hits at all ranges from 25 to 100 yards. thats the name of the game,burn powder and have fun.