Ryan Cleckner covers how to gather and organize D.O.P.E. (Data On Previous Engagements) and how to organize this information to make it readily available in the field. (NSSF Video)
I Recommend These Books & Resources:
Gun Digest 1944 + 2011, Bundle
Gun Digest 1944-2009 3-DVD Set
2012 Standard Catalog of Firearms
Shop more at gundigeststore.com
