Hey there shooters! If you're tired of scrambling for random pieces of paper at the range, this premade data book is exactly what you need. It comes with 100 double-sided pages (that's 180 usable data collection pages!) measuring 9 1/8\ x 6 1/2\ in a durable black polycarbonate 3-ring binder. The beauty of this thing is it focuses on what you actually use - circle pages, square pages, silhouette pages, cold bore pages, mover pages, you name it. They've cut out all the fluff like excessive range cards and note pages that other books overload you with. The reference section is packed with useful stuff - ballistic charts for common ammo, range estimation formulas, yards to meters conversion, wind observation methods, MIL quick reference, you get the idea. Whether you're just getting into long range shooting or you're a seasoned pro, this book works as your foundation. The standard 80 weight executive paper holds up well, and since it's a 3-ring binder, you can always add your own refill pages later. It's designed to grow with you as your shooting needs evolve. Law enforcement, military snipers, competitive shooters - this book has been tested by people who take their data seriously. Stop wasting time with disorganized notes and get yourself a proper data collection system!