Hagan if you go to this site you will find more than enought low pressure loads.
They are listed for 2 3/4" hulls. I have taken the data given for 20 ga. 2 3/4" Remington hulls and have cut them down to 2 1/2" and reloaded using the same componants but roll crimped using a .030 overshot card. From what I have read but cannot substanciate is that roll crimping compared to crimped is less psi. The finished shell in length is the same as a crimped shell but almost a 1/4" smaller when fired. If you don't mind the extra time in roll crimping, you will have a nice low pressure shell.
http://www.alliantpowder.com/reloaders/R...=3&gauge=12I don't know if you know this but Remington STS, Premier, Nitro, Gun Club, Game Loads are all the same internally, the only difference externally is that the STS, Premier, Nitro has a brass head, the others have steel. These hulls are compression formed like the good old Win. AA's not like the two piece hull of the new AAHS