kend: IMO - it depends. I really like 7mm bullets i.e. BC and SD are huge for their diameter (as are the 6.5mm's) but choices are slim in factory fodder. Prefer a .280 Rem over the 7mm RM but which one do you think you'll find in your LGS? Same with .338 Federal or .338-06. Great round's but I had a .338WM in the safe so I could use .338 bullets. Certainly don't need the .338WM's power but needed something. Local Wally World has six (6) WW brand boxes of .338WM on shelf - when was the last time you saw .338 Federal or .338-06 there? Homesteader