Believe it or not but I watched hand cut checker on Beretta o/u with women doing it. It was on HOW ITS MADE channel.said it only takes the about 15 minutes per side. The way they were going at it I believe it. After that I started looking at their guns at different clubs I shoot at. I couldn't believe how sloppy much of their checker work is. They use double borders to hide their over runs. First thing I look for on checkered when I pick up a gun is double borders. If the gun has that I look no further.