I have a friend who owns a 97 in 410. The only one I have seen. Anyway, we used to say "don't use high brass" shells. That means hotter loads. The cheaper stuff you find at Wally World etc is the low brass , milder loads. They'll do fine.
I have a 12 gauge 97 Winchester, it was my granddad's, grew up hunting quail and turkey with it. I love that old gun, but I haven't shot it in years. The barrel has worn so thin in spots, especially where the slide attaches, that I'm afraid to shoot it. Wish I had a new barrel for it, those are absolutely great guns.