Re: Which 338 lapua improved?
I have a 338 AI and runs 300s at 2970 very comfortably.
However, consider the $ for rechambering a "factory barrel"
IF you want to do it. Go to Dave Kiff at PTG and order the Speedy AI reamer $140. That way you can get a set of dies made that will match this chamber and the next chamber as you will own the reamer.
I have Neil Jones dies that are the top of the line $375. However, Forester and Hornady can make custum AI dies also. Just how long it will take is another question.
Rechamber the barrel, break in for 20 shots, super clean and then send the barrel off to be melonited. Cost is $100 with shipping and you will get 2-4x barrel life.