G'day and welcome to the Forum
its a dollar thing
set yourself a price and shop for that , else you'll end up like me , with lots of very expensive high end rifles and scopes , its baaaaad..
AI is a very good choice , i own 2 and have another 2 and used them in the military
one of my better pics is of a AI
but both the winchester 70 series and Remington 700 series have been tried and tested and shown to be very good platforms in .300 Win Mag, they both have great aftermarket options for customising to make it 100% yours and parts are cheap
i love my Mcmillan (x1) Weatherby's (x2) and Parker Hale's(x3), but new triggers are a weeks income for me and i'm wholesale ..
but i've set up both the win and rem for under a grand that you'll find hard to fault against something like a Mc or AI
so set yourself a price and i'm sure you'll find something that'll do what you want in a few price ranges , some you do yourself or out of the box, your call