Re: data book
I believe last time I looked Triad Tactical had a few options for different data books. If you are looking for an alternative to the impact listed in the thread. The good thing about them though is that if this is your first data book they have one set up for "new" shooter who doesn't know what they need in a data book yet, or you can email/call and tell them what kind of shooting you prefer and they will reccommend a certain format for you.