I use strictly Norma brass, I haven't had to trim till 5th or 6th firings. Usually anneal every 4 firings. I'm presently on my 3rd 6.5-06 barrel, total of over 4000 thru the 3, so I'm very familiar with the cartridge.
If your wanting the correct headstamp you must be planning on going to a foreign country, may I ask which one?