Marksmen always have DOPE Cards (Data on Previous Engagements) and if you an airsoft sniper or precision shooter you may want to make your own. A Dope Card is essential for predicting where a projectile will land at known distances with a specific rifle and ammunition combination. The acronym DOPE can stand for either "Data on Personal Equipment" or the more tactical "Data Observed from Previous Engagements," though there's no definitive agreement on its meaning. Ghost Ghillie shows how.