Re: What kind of Data Book do you us?
I use a "US Tactical Supply" because it was issued to me. It has a binder that allows me to take out and add pages as I need to as well as a wealth of shooting information. I have used others in the past as well as making my own. The trick is to find one that works for you and use it. If I were buying it myself I would go with one of the Hide vendors. I have not found a logbook that was so superior and unique that it stook in a class by itself. You are going to find they all have similar features with slightly different formats. Look at a few online and see which format suits you best. I like the smaller versions of logbooks. I like pages that allow me to draw my own target, and I use a template to keep it neat. Pages for round count, tracking your cold bore zero, range cards, movers and notes are all nice. Add a few information pages that include formulas, the sizes of targets, ballistic data, etc.. that you may use for a quick reference should you need it. Write in the rain paper is a definite plus. I like to have all this wrapped up in a cover that will protect it and hold a few other things used with it at the range, like a pen, the above mentioned template, a Mildot Master etc.