RE: How to spin test an arrow?
Danny explained what I' ve been seeing. The last inch or two of both ends of the arrow can be seen not to be true to the centerline of the shaft. Since I' m seeing it more on the pressed-in nock end, I' m beginning to suspect the pressed-in nock system. I know that I' ve got some arrows where I installed the ACC-60 G-nock adapters and they still spin true after years of shooting. This may be a blind alley but it is worth mentioning.