I just picked up a nice Stevens 311a sxs .410 for Lindsey. I assume that its choked full/full, but no marking on the barrel. There's no indication that steel would not be ok, but I am planning on using this gun at release sites and lead is a no-no. The date code puts manufacture in 1963, and the gun is in very good shape. Can I shoot steel loads?

Thanks
Willy
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"I know a taxidermy man back home. He gonna have a heart attack when he see what I brung him." -Quint