I noted this on ebay.  It was interesting to note that Sedgley thought the Krag action strong enough for the 250-3000.  Pretty impressive with an 87gr bullet at 2700fps.  That'd be a fairly mild loading, even milder than the start loads shown for the cartridge on Hodgdon's website.  Makes my wildcat rimmed 6mm Niemiller look a little more doable.  I recall reading somewhere that Sedgley would only work on Krag receivers that would take a file.    (You need to Login Oops, I goofed the 2700fps was for the 25-35 out of a Springfield, but many of the starting 250-3000 starting loads are within the Krag's pressure limit.