Last season I tried some Eley VIP 28g #5 steel cartridges, unfortunately with plastic wads, they were “old” stock. I also had Eley VIP 28g #5 lead but with felt wads, putting both in my cartridge bag. I didn’t notice any difference in performance between them on partridge and pheasants, this through my Browning B25, which has open chokes in both barrels, about 7 thou choke in each barrel. I’ve shot Clays with steel shot and again noticed no difference in performance.