I have a Mdl 11 in .308 Win that I am using in CBA competition and I can only adjust the trigger down to about 2 lbs and 7 ounces. I also have a Savage mdl 16 in .250 Sav that has the trigger adjusted down to about 18 ounces. I would like the mdl 11 to go down to about the same 16 to 18 ounce area. I have been told that there is a "varmint spring" that can be purchased to do this. Has anybody done this on their rifle?