I've shot a lot of rifles over the years and, while a trigger might get a little smoother, I don't expect miracles to occur with use.
A good trigger feel good because it feels smooth and repeatable without a gritty feel.
I personally like my hunting rifles to have about a 3.5 to 4 lb pull and the rifles that I use mostly on the bench all to have a 2 lb pull.
My CZs have hunting triggers about 3.5 lbs and also have set triggers slightly less than 2 lbs so they are great for hunting and also for shooting off the bench.
The rifles with triggers that were gritty or rough never go good enough and eventually got changed to after market triggers.