Odin Works makes phenomenal barrels, I have had excellent results with the many I have. I have never had an availability problem and they have gotten the nod many times as they were the only product that would check all the boxes AND was available.
Rock River Arms makes some good ones but availability and shipping can be an issue.
Critereon and Ballistic Advantage are also excellent barrels but availability is scarce around here.
Proof Research barrels are the best of any that I have used EVER. If you want the carbon fiber barrel, you are going to spend some $$$$$ but the weight savings is noticeable and welcome for long hunts.
If I were building a rifle for the intended use purpose that OP stated, the Odin Works 18" DMR Rifle barrel would be choice #1
Odin Works 18" 3-gun Rifle barrel choice #2 (slightly lighter)
Proof Research 18" Carbon Fiber Rifle barrel #3 (#1 if no budget constraint, LOTS lighter)
JP 2-port muzzle brake would complement your rifle quite well. There are some other decent brakes out there but many make a LOT of noise with very little recoil brake action.
The most important aspect to me would be to make sure what ever barrel I choose has a RIFLE LENGTH gas system.
Just my $0.02, HTHY