I designed and am making a tool that addresses the many problems with the other methods/tools used to find and measure the point of first bullet contact with the lands. The tool is called the LTL Gauge. Please see the ad currently running on the Accurate Shooter website or visit www.deadcentersports.com for more details. Here is a link to a a short video about the LTL Gauge. Thanks for looking!
Mike Harpster
Mike Harpster