I had several thousand Remington STS . I experienced great reloads with them. Plenty of room in the hull. The problem I encountered was hull separating from the base. Most of them went out of the barrel, MOST of them. I quit reloading them and now stick with the HS. Better safe than sorry.
I have had similar poor results with the STS hulls. They make a pretty reload, but are short lived. Unlike Winchester field loads, Remmie field hulls have steel case heads.
Eurotrash and Fed hulls are good for one load, then toss them. You might get two loads, but they will separate. I use these in the release pump, and will not load them but once. I won't risk a bore obstruction with a failed case body in a fixed breech repeater. Moreover,tubes are likely to retain the failed body more often than a steel barrel.
I have shot more 28's than most folks. Stay with the AA-HS hull. They will split, eventually, and sometimes have a case head crack on the factory firing, but typically do not separate and stick in the bore. They are generally like Tootsie-Rolls. They last a long time.