Don’t know how long the magazine is on a Winchester short action featherweight. Maybe long enough for a 260 with long bullets. They’d need a different chamber dimension than Remington to load heavy bullets to a longer COL. May as well go with the 6.5 Creedmoor as Remington had jinks the 260 forever and the next step above the ballistics is a Winchester 270 anyway. The 6.5 Creedmoor will match a 6.5 Swede but with greater case life and less powder volume.