Love my modular impact data book. Spend some time looking over all the different pages that you can include in YOUR book the way you want it.
Don't be afraid to call them up either. Very friendly, patient, and willing to answer all your questions.
A modular book comes with a set of standard pages, then you get to pick out the rest. I highly recommend getting the platic tab pages to break up and organize your book into sections.
Here's what I went with and what I see when I open my book:
1st section - standard pages which includes shooter info, rifle info., emergency contact info., some standard ballistics charts, range estimation page, yard to meters conversion page, come up sheet, mil values, moa values, Mil - MOA conversions, etc.
2nd section - (CB-CIR) Cold bore data with circles pages.
3rd section - (come up sheets) Right now I have several loads I'm working with. So, to keep everything straight once I've chronographed and run the data through a ballistics calculator, I write that data down on these pages.
4th section - I used 3 of my choices for this section - Shooters diary Circle (SD-S-DIR), Shooters Diary Square (SD-S-SQU), and Shooters Diary Blank pages (SD-B-B). These pages give me plenty of room to log a shooting session - more than one shot.
5th section - Load Test (LD-LT) After studying as good as I could the options for load development pages online, I opted for these. I mistakenly ordered this set of pages twice - my mistake. I found these pages recorded the data that I most wanted.
6th section - Reticle hold - chances are Impact Data has your reticle and these are handy if you want that data.
This is just an example of what you can put together with a little studying of what's available, what your uses and needs are, Vs. just buying an off the shelf book that will no doubt have alot of pages that are of absoluetly no use to you. Another benefit is that you can add or remove pages as you fill them up or your needs change at your leisure.
I'd highly recommend that you also buy yourself a data book cover to protect your book and keep pens, pencil, mil-dot master, etc. handy in once place. Impact has a cover, but I opted to get mine through Triad Tac. as they had more color options available and a better price on the cover.
If you were or are like me, who took a note book to the range and scribbled down notes, chrono results, daily weather conditons, etc., etc. you'll appreciate what a data book can do for you. If nothing else, it will keep what data you do collect in one place, in a manner that's organized.
Good luck and let us know what you decide and if you like it once you've had a chance to use it.
You also made mention of doing this for several rifles. You could do multiple rifles in a book, or go with a book for each rifle which would cost more. Call up Impact Data and explain your needs. They will lead you down the right path. The gentleman was more than helpful to me for my simple data needs.
Edited by FireEMT5 - September/08/2011 at 11:25