Personally, I'd rather have a 250AI or 260 if I wanted to run something with that kind of case capacity in a 2.8" action. The 25-284 is just as easy as the Souper, but grants some real performance gains in a short action rifle. Mine does 3,650fps with a 75gr V-max and 3,300fps or so with 100gr bullets. While the 284 case can present some OAL issues with high-BC bullets in the 6mm and 7mm variety, most of the .25cal bullets have shorter noses and can make 2.8" without issue.
