Found my Lyman electronic trigger pull gauge! On the out-of-the-box GP-100 Match Champion, the double action trigger is 7 pounds 1 ounces. The SA pull is 4 pounds 1 ounce. The Lyman gauge is kinda futzy and sensitive to how its held, and I did my best to eliminate the human error. By way of comparison, my custom GP-100 from Cylinder and Slide runs about 5 pounds, maybe an ounce or two more on the DA pull. The Match Champion has no grit and is very smooth...the C&S gun is...perfect.
The Match Champion has been both dry-fired and shot (all DA) A LOT, and the trigger pull has gotten better and better. The C&S gun is just back from the shop and doesn't have a round through it. I would anticipate the DA trigger pull "settling" in the mid-high 4 lb range by the time I get it to the IRCs.