people said:I do not know what that would have done to the load but I do know it would have had an effect.
Most definitely an effect on the spider. 8)
On using the stainless media, one thing to be particularly careful about is to remove the brass as soon as the tumbling process is complete. I use an old RCBS Sidewinder (purchased back when they were affordable) and left it once overnight after the timer shut off. When rinsing the brass it looked like it was coated with something cleaned out of a sink p-trap. When the pins/brass/detergent/water mix sit too long, the detergent looses it's ability to hold the crud in suspension. It then drops out and forms something like a "Bathtub Ring" except it's everywhere on the cases. Be sure and rinse immediately after the tumbler is turned off. Don't wait more than a half hour or so or you'll be re-cleaning your brass.