Nothing wrong with the hornady shell holder except the base where the shell sits is .006″ thicker and my prime tool leaves the primers .004 proud in the pocket. Luckily I found this out before firing any reloads. This RCBS holder is the right dimension for handheld prime tools from Lee and Lyman, it makes a difference.
https://www.amazon.com/RCBS-9203-3-Shell-Holder/dp/B000PWBF3O