Ten thousanths (.010") is what my retired gunsmith friend considers the minimum safe sear engagement on a hunting trigger on a 700 (classic trigger). He did several of my triggers over the years. I also had several done by Jim Pigg in Wyoming. I've never had any problems.
My point was that people who don't know what they are doing should leave them alone. I remember watching college buddies mess with theirs (before there was any help from the internet). Sometimes the results were very unsafe. They were playing with all three screws. Most of the internet instructions today tell folks not to touch the sear engagement screw. And they point out which one that is.
When it comes to important safety issues I seek out an experienced professional, whether it involves a trigger, car, airplane, home electrical system, or a surgeon. There are many areas where money can be saved by doing my own work. There are some areas where I feel good money is well spent.
Nifty-250
"If you don't know where you're going, you may wind up somewhere else". Yogi Berra
