Prior to the current primer shortage one of my shooting buds often commented that Rios are too much trouble to use. I called him earlier and asked why that is ..... in addition to being somewhat oversize and thus hard seating in once-fired American hulls, their leading edge isn't as radiused as other 209 primers and can cause jams (in the seating station) of progressive loaders like MEC 9000's.
Last edited by Frank Srebro; 03-18-2021 at 07:45 AM..
Reason: Slightly reworded for clarity
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