Honestly I think you'd be real happy with the hand loads mentioned above. If any of your friends do any type of hand loading ammunition it's really easy. And I think it will be easier to get a food load that way than just accepting the limited choices of factory ammunition available.
I shoot a factory original ( fixed full choke) Savage 220A that runs over 200's at 40 yards w a 1 7/16 oz of TSS 9's.
The amount you'll spend on the tubes, and cutting an old gun , you'll be money ahead. My .o2