I've had a Sako 85 (wood and blue Hunter) in .308 for nearly 10 years. Can't fault it and don't plan to change it. As for the calibre, what's not to like, where stalking's concerned I don't feel as if I've got anywhere near it's limits. I've tried a few other cartridges on the hinds, 243, 6.5 x 55 and 7mm RM (a very smart PRS custom setup!) and to be honest I couldn't really tell the difference in performance between mine and the 7mm RM at ranges up to 250m. I've taken it out to 600m on the range and it performed as expected.
Factory loads I've used include 123gr Sako Gameheads which work very well, Hornady 150gr Superformance and Remington 150gr CoreLokt. It didn't like RWS 150gr much. I've loaded Hornady 130gr SP, Barnes 150gr TSX, Hornady 150gr SSTs, Nosler Partition 165gr (the jury is still out), SGK 150gr and SMK 155gr for target work.
CH