Anybody contemplating doing the so-called Dale McGee modification of the Browning trigger should be aware that all the set screw does is reduce the sear engagement. There are inherent risks involved in such an approach, and in Wayne McLerran's book on the Browning M1885 he notes that "setting the trigger too light can cause premature wear to the tip of the trigger sear, leading to a very unsafe trigger or a condition where the hammer will not stay in the full cock position." He also says that the trigger sear is relatively soft compared to the hammer sear. He does describe the McGee modification, which he call ingenious and simple, and notes that it can easily be removed. All or most triggers consist of a relatively complex system of levers and springs working in conjuction. Modifying just one part of the system poses inherent problems, especially if an attempt is made to produce a very light pull beyond the design parameters.
IMO, a safer, better, approach is to consult a gunsmith familiar with these rifles. Otherwise, proceed at your own risk.
Paul
