NEITHER...get yourself a 7mm or .300, that way you'll have alot more choices in bullet weight and if you'd like you could shoot either with 140-50 grain bullets to be about equal to the two you listed. Then you can always bump-up to the 180-220's as needed.... To be honest I think you might be better served with the standard 7mmRM or .300 WM..they can easily better both and are simple and available everywhere...