I get 4 to 5 reloads out of mine easily, using Gualandi SG-28 wads (the original). Currently using 13.5 - 14.0 grains of Solo 1250 or Unique to push 5/8oz for backyard skeet, etc. Same goes for Fiocchis, PMC, Estates and other straight-walled hulls. Disclaimer: I have never had or used sub-ga tubes.
You'll find Alliant maintains 3/4oz 28ga recipes for Federal and Cheditte and I use those, often reducing the paylaod to either 11/16 and especially 5/8oz (without fillers -- its all in using the right wad!)
I was struggling with a single stage but, once I went to a 9000 with its resizer and final crimp die, I have not looked back!
Friends I shoot with use Winchester HS wads in the RIO 28ga hulls to great effect on some very serious sporting clays courses, pushing 3/4oz with Unique and Longshot but, I'm sitting on quite a few cases of the Gualandis so, it'll be awhile before I take up the HS wads. You can do a search here, also; this is a perennial question and quite a few have actually contributed to it. Still, it is always amusing to read the negative anecdotes by members who apparently have never actually reloaded the things +/or quite obviously didn't succeed where others have.
Are they "the best" (definitively)? Of course not. The Winchester 28ga AA HS hulls are the best IMO (except the ones on which the brass head splits after 1-2 firings. Go figure. I've never had the brass on any RIO or PMC split, even after 6 firings. Go figger.)
Are RIO's (or other straight-walled hulls) "good"? That is a subjective conclusion you'll have to make but, in doing so, get enough opinions that you can sort out the empirical from the anecdotal.
Best o' success!
Here is some of the info from earlier posts on this, by members with actual experience:
>To: "thor sen"
>Subject: 28 gauge loading data
>Date: Tue, 9 Jan 2007 17:14:02 -0500
Happy New Year to you also. I enjoyed hearing from you. Here is the reloading data I acquired from Hodgdon. Hope that it helps.
Use the Fiocchi 616 primer in all of the following data and the Gualandi 2838 wad and 3/4 oz. shot.
28 gauge Cheddite, Rio, Gamebore, Fiocchi (all except the Fiocchi are made by Cheddite)
Hodgdon Universal 14.3 gr. -1200 fps.
Hodgdon Universal 14.7 gr. -1225 fps.
Hodgdon Longshot 16.0 gr. 1250 fps. (This is the load I used for pheasant because I didn't have any Universal)
Hodgdon Longshot 16.5 gr. 1275 fps.
I would like to have tried the Universal, but I have so many other powders that I didn't want to go out and buy another one right now before using some of the others up. If you would, let me know how the data I gave you worked for you. Happy reloading !!!!!!!!!!!! I wish 28' s weren't so expensive to shoot. I have a friend who had a Spanish double 28 gauge custom made for him, and he used it pheasant hunting this year. He used some of the loads I listed for you, and he had really had good luck. The only concern I have is that I wish more of the shot was inside the wad.
If you discover any other loads with the Gualandi wads let me know also - OK?
More data here: http://books.google.com/books?id=euVYgy ... q=&f=false