When setting up the 35P (or any other light-screen chronograph) I use the method suggested in the directions, I believe written by Ken Oehler himself:
Set up your rifle on bags, aimed at the downrange target you'll be shooting. Then, with the rifle unloaded and bolt open, set up the chronograph, aligning it while looking over the screens at the muzzle/scope of the rifle. This is quicker than any other method I've tried.
I would add one thing to that. I use a 15 ft length of jute (string) tied or taped to the barrel of the rifle. When you are setting up the chronograph, pull the string out straight and align the chrono/screens along that line. The string gives you both a straight line and height. You might prefer to tie the string to your rest. Either way, the string makes short work of aligning everything.
![[Linked Image from i.imgur.com]](https://i.imgur.com/AP39Jhm.jpg)
