I reload both 28 ga & 20 ga. My favorite loads for both are Winchester AA Super Sports pushing their shot charges down the tube at 1300 fps. I can replicate both of those high performance loads for under $4 per box. That's a savings of $4 to $5 per box on the 20 ga & $7 to $8 per box on the 28 ga.
With the AA High Strength (HS) hulls, I've got some 28 hulls that I've reloaded 6 or 7 times already.
For both I use Hodgdon Longshot, Winchester 209 primers, & AA wads.
Hope this helps!
Best Regards,
John Voight
http://www.BonasaFlats.com"Versatile & Prove Bird Dogs for Dedicated Bird Dog Owners"