I have had three 338’s, 2 338-06, and 1 or 2 338-06 AI’s. This is what I learned.
1. 22” barrels are perfect for all.
2. The AI version doesn’t gain anything over -06 version.
3. It is easier and safer to load a 338 down than to try to turn a 338-06 into a 338. Just use R15 or Varget.
After all the effort and expense I found that a 30-06 or 270 with very good bullets works just as well, so all of them now live elsewhere and I never miss any one of them, ever !!!