I've been playing with a couple of apps for the iPhone and I have to tell you they are both fantastic!!! Awesome power and information in a phone size package!
iSnipe
http://isnipe.webdiligence.ca/index.html
Ballistic and also my favorite!
http://ballistic.zdziarski.com/
Whenever I frequent my area gun shops I like to look over their racks to see what they've bought or traded for. In February of 2008, low and behold I found a Ruger No.1, model 1-B in 30-06, on the used and abused rack. After fondling the rifle and examining the years of use and some abuse...