Generally speaking, cut wire shot durability is in the range of 5-8 times that of cast steel shot, depending upon the peening intensity. I'm curious about you comment about the specially selected media giving you a reduced time to reach saturation. Do you conduct a saturation curve according to SAE J443 by subjecting a minimum of four strips for various exposure times? Smaller media will achieve saturation faster than large media since you have more "dent makers" per pound of the smaller media. For each pound of media projected you get more dents and hence have a shorter time to achieve saturation. I'd like to see your data for saturation curves.
Jack
