So I thought I was being "smart" when purchasing the KM arbor with the donut cutter. I have noticed the inside necks now resemble the grooves found on a record. Both the 30cal and 223 mandrel do this.
I can't see how this would be a good thing. Would this not cause changes in neck tension?
I can't see how this would be a good thing. Would this not cause changes in neck tension?