Very good video, interesting and informative (I did not see ALL of it, though...gotta hit the hay very soon so I'll see it in its entirety when I can).
I do question the summarized results, though. When showing the Co-Ax, he implied that he used non-Forster die lock rings...what I saw looked like RCBS die lock rings. I suspect that may have skewed his run-out numbers with that press. I could be wrong, but I believe Forster rings work best with the Co-Ax.
Further, Forster lock rings are Aluminum not steel. Aluminum is softer than cast iron concentrating wear on the lock ring rather than the press. I think it is a mistake to not use Forster lock rings with the Co-ax. The one exception I’ve made is with Whidden dies (particularly those with their indexing lock ring). Whidden also uses a thick aluminum lock ring.
My second criticism concerns the application of Redding Imperial Case Sizing Wax. The consistent application of ample, but not excess, sizing lube directly correlates with increased uniformity in sized brass. Lubrication effects mechanical sliding friction. Variations in mechanical sliding friction contribute to variations in deformation (elastic/plastic). We’ve all seen brass spring-back vary with inconsistent lubrication particularly as brass gets worked. Regarding the application of Imperial Sizing Wax, my experience shows its consistent application to be much more an art than science.
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