I've quit doing Sako extractors on those and switched to ptg's mini-16. It works a lot better and can't blow out. Pretty much the same thing as what new Howas come with.
As for the 338-06, I'm another believer. I had Norm Johnson rebore my rotted out 1903 barrel to 1:15 twist and shoot a paper patched bullet Accurate made for me, 210 grains. It's plenty accurate and would be fine for hunting pretty much anything.