Years back, we bought 10 cases of Rio Shot Shells for an informal Trap, Skeet and Sporting Clays match held up at our Hunting Cabin. Hey, they were cheap! Most of us used our Hunting Guns and almost all of us had multiple Shotguns on that week long trip.
Rio Shells worked fine in most of our Shot Guns but we did have an issue with them not extracting properly in our semi autos. The folded crimps on the head were not sharp or crisp and the extractors rolled off too soon. This was not the fault of the Shotguns (3 separate guns ) because as soon as we switched back to our normal Federal, Remington or Winchester fodder at that time, all worked perfectly.
Could have been a bad run from worn out Dies, they more than likely have resolved the issue by now, however after that trip we never bought that brand again.
When I purchase Target Loads now I open a box to make sure the bends are crisp and the extractors will grab properly (check with fingernail). Since doing that I haven't had any issues with SA Shotguns but again, haven't tried Rio brand since.
Just wanted to give you guys the heads up - check the crimps with your fingernail if you are using semi auto's. Other than that issue, they worked OK.