Other options are a Montana in 280 Ackley, and a 7lb 14oz M-70 7mm Rem Mag, both shoot the 160 Accubond at around 3050 FPS.
When Kimber came out with that 280 AI those things sold like hot cakes to sheep hunters up here in Alaska. now most are using 6.5 CM and the 280 AI have been relegated to the safe.. Call me mr nostalgia but I chose a winchester because that's what Jack O'Connor used for his sheep hunts. I think the perfect rifle would be a stainless classic featherweight in a chambering of your choice.. if I sheep hunt next year I'm going to use a blued featherweight classic in a 270 with 150gr Sierra's. Finding a new haven classic featherweight getting harder and harder.