Originally Posted by ridge rider
What is the purpose of building this rifle. Is it for a lighter weight rifle with less recoil and no need for a muzzle brake..
Then if you are going for a lighter rifle and please correct me if I am wrong but from my knowledge the only actions that will handle the shortened Rem 338 Rum round (aka 338 NSS) are the very long actions and that defeats that purpose for a light weight rifle without muzzle brake.
My suggestion is:.............go for the Tikka T3 in 338WinMag.
It is a great combination and you will not get a better, more accurate out of the box rifle nor a more efficient round to produce what you may seek.
A good .338 calibre, 250 grain bullet @ 2900 fps offers serious long range performance.
The 404 Jeffery derived cases like the .330 Dakota and .338NSS are all good. Just decide on a cartridge with the powder capacity that suits your needs, slap in a bullet in your favorite calibre and away you go.
Add a muzzle brake and 26" match grade barrel and you have a rifle that is light enough to be carried anywhere and can also be shot with ease off hand.
The .338 Edge, RUM and Lapua etc offer better performance in rifles with a longer barrel. But in a light pack rifle with a 26" barrel, the difference in performance might not be significant. Recoil and noise however might be.
The Tikka T3 is a great rifle in .338WM as can be seen from recent results of Luke's rifle, both at the range and on game. But a couple of hundered extra fps would sure flatten the trajectory past 500 yards.