While this doesn't specifically address the tips, I have been watching (and learning) as much as I can about Sear's as part as an education process and found these two videos pretty good as a base builder for my education.

While I have not found any specific videos on tip shape most people say doesn't mess with them.

 

Thanks. I'll have to watch them.

 

I do lightly bevel and polish the sear leg (center) it would be difficult to measure the results, but it can't hurt. As long as one doesn't over do

 

I just polish all the surface that contact the sear and trigger bow. Sear sprains as delivered can be quit ruff.

 

I fine stone & polish the ends of all 3 legs of the sear spring, polish the trigger bow, both ends of the disconnector, Barrel's feed ramp (if its a ramped barrel), hammer strut end, MSH cup and the extractor business end......
But what do I know? I think @tac45 is a shark.

 

I fine stone & polish the ends of all 3 legs of the sear spring, polish the trigger bow, both ends of the disconnector, Barrel's feed ramp (if its a ramped barrel), hammer strut end, MSH cup and the extractor business end......
But what do I know? I think @tac45 is a shark.

I do all of that too. I'm learning the sear spring now. I have a few Colts and Wolff's to play with.

 

As for polishing: This subject has always interested me. The USGI print calls for light bevels of the tops of each spring leg.
The pre-war Colt National Match had a spring that was almost completely polished.
I have examined springs that were polished, sanded, reduced, and on some springs had almost no attention given to them at all.
Bigger issue I see are rusted sear springs. Its a good idea to make sure your sear spring is cleaned and oiled when you clean the gun. A rusted sear spring will break.


Bending is a little bit of an art. A lightweight trigger responds well to a lightweight sear spring like Colt currently uses. They are super good quality and seem to last forever.

 

I realize this is a bit of an old thread however - re: lighter sear springs making for lighter pulls - i have a HD unfit EGW sear spring polished and in my colt comp right now and im pulling at a consistent (every single pull) 2.5 pounds.