The OP did not say if he was building a custom gun around the action or a factory, out of box, question. Most people, 90% buy a gun and shoot it. If a little motivated, they will adjust or replace a trigger. A bad trigger, one that needs replacing is not an plus for the maker, IMHO.
To use a sports, metaphore, on any "given sunday". Any two nib, guns for the 4 makers, could be any one is the winner.
My CZ 527 varmint will do 1/2 moa with factory ammo and that probably translate to 1/4 if I ever wanted to spend a pile of time and money figuring out the best reload. Good trigger, no tinkering needed. No bedding, nothing. The finish and walnut stocks are top notch.
I dont like Remington for anything any more. The finish and triggers are low end. The only claim to fame for a Remington is a lot of gun smiths will reuse the action to build a good rifle. Accuracy probably just ok. Triggers get replaced.
Ruger never had a great reputation for consistent top accuracy. They are GOOD, not great. I think modern manufacturing has allowed them to improve their average. The actually accuracy of their Precision rifle in no better than any cz or tikka varmint. Ruger is a good value, but I would never call them the "best accuracy". I own Ruger and they are honest, solid: Good gun. The American is a great hunting rifle, only good at the range. I would hope for 1 moa with best factory load. About double the cz.
Savage is interesting, the average is average or better. The good savages are just amazing. The occasional lemon (or not that occasional based on my club members) drags the average way down. If I was on a budget and wanted a basic 308 heavy barrel gun I would consider savage and be prepared to dump a problem gun and buy a 2nd try if needed. The trigger is good too.
It is all a gamble. I dont think the makers even test fire the guns any more. Maybe CZ, I think I got a test target. Ruger has the best customer service. CZ is good. Savage, I dont know. Remington is awful. That is both personal with all three and by reputation.