I've been using an on-line ballistic calculator on the Handloads.com web site (http://www.handloads.com/calc/) andgot to wondering how it compared to the Barnescalculator Sabotloader uses. So I captured one of his from another post and plugged the same figures (velocity, bullet weight, BC, etc.) into the one I've been using. Both of them are shown below. They don't agree exactly, but arepretty close together.