Re: A Couple of quick Scope questions.....
For Q #1 Take a 36" square piece of cardboard and draw a 1/4" wide black line top to bottom in the middle. Using a plumb bob securely hang the cardboard so the line is vertically plumb 100 yards away. Then using some type of level apperatus, level the rifle off of a flat spot on the scope base or off the action rails. Then turn the scope so when the rifle is level, the crosshairs are perfectly on the vertical line on the cardboard. After that is all in tune and if you are going to be turning turrets for long shots. Place a small orange dot at the bottom of the vertical line and sight in on it at 100 yards. Then turn your elevation turret up 25 MOA and shoot two or 3 more shots at the same orange dot. Your last 3 shots should still be centered on the line but 25 or so inches higher up the line. If they are to the left or right of the line, you will need to slightly rotate the scope again to fine tune it.
This is the method we have learned by reading and talking to others. We have done a few rifles this way and found them to follow tracking very well even at 1000 yards.
Hope this helps.