Does anyone know of a shell catcher for a Hatfield SAS in 12 ga.? Its very similar to a Berretta 301. I tried the Birchwood Casey wire gizmo and it doesn't work

Try a rubber band wrapped around the receiver across the ejector port. Placing it someplace in the front half of the opening typically works best. My club keeps a bag of rubber bands under the counter for those without she'll catchers.