If you are gonna handload then the 338-06 will be by far cheaper than the 338 federal. Simply because you can find cheap or free 06 brass anywhere.

The 338-06 is a really good wildcat cartridge. 338win mag performance while burning less powder. It’s on my list of future builds for sure. It also can be run in shorter length barrels without effecting velocity as much as a shorter length win mag.