The Savage comes in 3 types (well 4) triggers.
Plain Trigger.
Acu Trigger: These have a little adjustment screw on top of the spring. They are not labled as such but come with the guns that are in that category .
Acu Trigger Hunter: : This is a hunting range of pull, 7 lbs down to 3 as I recall.
You can make one into a Acu8 Varmint with a spring change. NSS has them/.
Acu Varmint: This is like 4 lbs down to 1.5 lbls, no spring change for these.
Acu Targert: On very selected guns and it has a RED trigger blade, 2.5 on down to 8 oz or some such. It takes a new sear (Savage wants an SN to order one and a waiver and that may no longer be available) and a spring change.
I have two I changed with springs into Varmint. One is very nice the other so so
The one Varmint is so so. Good triggers, not quite bench rest class.
They shoot good enough for my recreational target shooting. If I was bench rest only one would and two would get changed.