I will apologize now for the long post but I have just started shooting long range and I am going to aquire a cheap bsa target scope for my rifle to start with my question is according to some calculators if I zero my rifle at 100yds and want to hit at 500yds I need to adjust 7.5moa now I'm assuming moa at 500 is 5in. so I need to adjust up about 37.5 inches now on the scope its 1/8moa adjustment so I'm assuming that every 8 clicks is 1moa but to go up 7.5moa that is like 300 clicks do you just sit there and count them or is there a quicker way of doing this I wanted to find out before I got the scope. I thought maybe there are some kind of marks on there that tell you that you went 1 full turn or something and that 1 turn is so many clicks or moa you know what I mean thanks for any help or advive.