Can only comment on Smith's doubling, but after thousands of shots, the upper edge of the tip of the sear (usually the right) becomes rounded, causing a light trigger pull or doubling. This is JDW's excellent image
Dan Lammers of DL Precision left Phoenix for Redding, CA a couple of years ago, but before leaving he worked over the locks of my lowly 00, and for the first time I became aware that a crisp trigger is truly a joy and wonder.
Unfortunately, my hopeless flinch is even worse with any trigger but
