Questor,
It's kind of like loading metallic. Different things work best in different shotguns.
I hunt upland extensively with a 20 gauge and I also use 1 oz. of shot with Unique powder. The only difference between you and me is that you're using Federal Hulls and I'm using Winchester AA exclusively for the 1 oz. loads.
Due to the numerous uses I have for the 20 gauge, I decided a long time ago to use certain hulls for different things to give me instant visual ID. I use Winchester AAs for 1 oz upland loads, Activ hulls for 1-1/8 oz. upland loads, and Remington Hulls for 7/8 oz target loads (or light hunting).
Why don't I use Federal? Because I don't have a source for empties and I do with all the other brands.
About the only difference between a "target" wad and a "hunting" wad is the amount of shot it intended to be used with. They shorten the legs and lengthen the shot cup area for more shot. An exception is the Ballistic Products' Turkey Ranger, which is a whole different thing. There are probably others.
As to powders, I use Unique with 1 Oz, Blue Dot with 1-1/8 oz and PB with 7/8 oz.
As far as I know the Lyman 4th Edition is the latest and greatest. I have it and use it religiously. You should think about this too. It contains just about all the info you could want or need and literally thousands of loads.
Ka6otm