Is there a book of shooting drills out there? Either for pistol or rifle or both? Got a small handful of drills I like to practice when out shooting but I thought it would be nice to have a book to keep in my range bag that details a variety of different drills. I have looked for such a book but didn't find anything. Yes I know I can look up a host of different drills on the internet but again it would be nice to have a book to keep in the range bag that I can pull out while I'm in the desert or mountains shooting and set up some different scenarios/drills. Thanks.