I have shot a lot of triggers. Timney and Jewel are two after market ones (probably a couple others as well).
The Savage Acu Trigger in the varmint type (there are 3) will go down to 1.5 lbs. That is way to light to hunt with but makes for a good target trigger if the rest works right.
And I know its pretty subjective for triggers. My view is that the Acu Trigger is just short of a match class trigger. Pretty good in other words. It has a clean crisp let off, no drag at all. Worst is it varies a bit on the lbs.
Great hunting trigger (set up heavier in my view) and its a very good casual target shooting trigger. I don't think Jewel makes on, so its Timny or there is one other (Basix Trigger 2?).
I have 3, either varmint class originally or changed to that with a spring change.
I think you could do non professional (local match) target work with it pretty well.
The Varmint Contour is not a bull but its not that far off either. In the .223 it is a Bull Plus as the caliber is so small (same contour for the 308 but the hole is bigger !)
Barrel is easy to change, I don't swap them around but I did build 3 target rifles off the actions (got the receivers and barrels at a good to very good price)
You can't get Savage barrels but there are lots of mfgs that offer Pre-fit, you take the old one off, put the new on on, head space it and no gun smith needed (basic tools about $100 or so, having a Vice helps)
Savage barrels vary from ok (1 inch or a bit more ) to pretty good at 1/2 MOA. You have to shoot them to find out and hand loads generality shoot better than factory, though there is some good factory match that is worth trying by most cartridge mfgs if you don't reload)
I like the Savage as the better ones you get a good stock, good trigger and reasonably accurate. I shoot a lot and will wear a barrel out in 5 years.
In my opinion the two best barrel makers are Shilen and Criterion. I don't have a Criterion, but the people who do and can write up a decent report say they are so close to the same as not to make a difference.
The difference between those two and the others is how much finish work is done (lapping) and how often you get a poor barrel (very low) and what they do about it (correct it)
There are some suppliers that by calibrated blanks and finish them with threads and chamber. You are dealing with two aspects to sort out.
I would go with the OEM. Norther Shooter Supply deals in both Shilen and Criterion.