Lapua closer to 340 Weatherby, HOWEVER!!!
The 338 Lapua and the 340 Wweatherby are similair cartridges, with one being a belted Mag the 340, and the Lapua 338 being beltless. The 340 headspaces on the belt, while the 338L headspaces on the shoulder,
THIS DIFERRENCE MAKES IT UNSAFE TO INTERCHANGE THEN!
Other then not being interchangeable, what one can do the other can do, with very similair if not the same ballistics and performance.
The 338 Win is case capacity wise in the class of the 264win mag, 7mm Rem mag, 300win mag, being that they have the same head size, about the same capacity for powder, and will work thru a standard lenght action.
The 30-06, my favorite, is very versital, whether your a one load for everything hunter (me), or a change the bullet wieght for everything, this round will handle all game in North America, from rabbits to Mouse.
The advantage of being a one load hunter, is that no matter what shot or cittuation, and you have shot the gun enough, there is no doubt about where the bullet is going if I do my part. Some rifles don't seam to care about bullet wieght, and others the change in the POI is extreme.
Al