Refill pages for Brownells Rifle and Sniper Modular Data Books come in packs of 20 sheets (40 pages), so you can continue to document critical information about your rifle’s performance and shooting conditions. The Storm Tactical™ Modular System Information Pack and Target Sheets allow the Operator to build and organize a Data Book to meet mission requirements. Packs are available for a variety of targeting scenarios, listed below. Large pages are 5½" x 8 3⁄8" and printed on 90 lb. white cardstock. Fits the 3-ring Brownells Rifle and Sniper Modular Data Books.