This looks interesting.
https://www.ballisticmag.com/2019/04/25/federal-custom-shop-announced/
The new shop allows shooters to order direct from several different shotshell and centerfire rifle offerings, with a wide selection of the best bullets from Federal, Nosler, Sierra, Berger, Swift and more. In addition, custom TSS Shotshells for turkey, waterfowl and upland game are available. Basically, if it’s not in Federal’s catalog, yet they have the components and capability to custom build it, they may build it for you.
https://www.ballisticmag.com/2019/04/25/federal-custom-shop-announced/