Ya I have removed one on my dad's 7mm mag browning a bolt II. I just bought another one and am working on it and going to lighten the trigger. Timney has a spring kit for the trigger.
Timney Trigger Spring Kit Browning A-Bolt 2 to 3 lb - MidwayUSA
Im going to get this and see if it works. The reviews look good and will probably come with instructions on removal. Im sorry I don't remember how to take it out but I will remember real soon when I do my new one.
Don't know if your interested in lightening the trigger but this is a idea.
I will keep in touch when Ive completed this.