The stock Tikka trigger can be set very light, but you have to modify the trigger pressure grub screw. When wound out to maximum factory lightness it contacts the trigger unit mounting bolt head. If you remove the trigger unit & take a mm or two off the head of the grub screw, it will wind out further & lighten the pull. It’s still single stage, but everyone that has shot mine has been amazed at how light it is .
YMMV
Any concerns with slam firing or the sear falling when you don’t want it to let out that far? I’ve thought about doing this.