I just ordered a Tikka 300 WSM w/ a 24" barrel. I was told that the balistics were very close between the two calibers and that the WSM had potential to be more accurate. I was also told that I wouldn't be as satisfied with a 24" barrel in a 300 Win mag, that the win mag needs a 26" barrel to get its advantage over the 300 WSM. Does anyone have an opinion based on experience on which cartridge is supperior?