Re: rio shotgun shells
RIO is actually a good shotgun shell. They use a plastic piston wad, so your barrel is protected from lead fowling. Rio also puts a heavier shot load in their "field" shells than any of the leading brand manufacturers. For instance, Rio loads 1 1/4 ounce of lead into their 2 3/4 12 guage shotshells, and Federal, Reminton, and Winchester only load from 1 ounce to 1 1/8 ounce of lead. I would assume that they load their .410 shells on the heavy side as well.
You may rest assured that you made a good purchase.