The 338 win mag has been one of my favorites for a long time. It can take BIG game at long distance. I own one, and Im learning just what I can expect from it and want to do with it from folks like L.T.L.R. and others who know it intimately.
Great cartrige. Ive used them on elk in the past, but not at any real distance yet.
I think the main reason for not hearing too much about it is because of the performance gains you get from other 338 cartriges such as the 338 Edge, AX, RUM, Lapua etc. that are a bit better suited to fling high B.C. 338 cal bullets faster, and flatter. Not that the 338win is not up to the task, it is fully capable. Theres just some other's that do it with more authority.
I have a 300wby and a 270wsm for my fast/flat rifles, but I got a soft spot for the 338 win mag. Its a work horse with a great track record.
Good luck with your choice. Let us all know what you decide, and post pics.