Here's a quote from another site (pardon the spelling)
Remove the trigger guard and you will see a set screw. one way stiffens the pull and if you turn it the other way it will loosten it. Use a snap cap ou a spent round in the chamber if you are loostenning (lightenning) the pull. once you have it set to the desired pull smack the but of the gun on the floor to make sure the trigger is not set to light, and DOSE NOT GO OFF. If you can get or borrow a trigger scale it would be better. Hope this helps. And happy shooting.
The spring kit works nice, mine ended up about 3.5lbs going that route. If you are comfortable with it you can also polish up the surfaces which will help as well.
I thought someone (rifle basix, jard, jewel, timey, etc.) was doing a replacement trigger kit for the a-bolt but I might be wrong and frankly with the spring kit and a little buffing it doesn't need anything else.
Thanks fellas. I tried to find a direct replacement for it, and couldn't. I appreciate all of the help, I now have two browning rifles and hate the trigger on both. I got them at a heck of a price so I felt like I "had to have them, like they were calling out to me"