I have a 870 Wingmaster 12 ga. and Browning auto-5 12 ga. circa 1975, both with fixed full choke barrels. I haven't gone waterfowl hunting since they switched the load requirement to steel. I have shot them plenty for upland game over the years using lead and both guns are in great shape. Would these barrels be OK for steel or hevi shot loads? Over the last few years I've been using a side by side and over/under for my upland game, and these two guns with their longer barrels (30" and 28") are not getting as much use anymore. I'm thinking maybe I should give them a work out later this year after some ducks but was worried about the barrels.