John,
I didn't get the pins from Numrich. They were won off Ebay along with the complete sideplates, trigger, locking bolt, etc for a 12 ga for a hammerless gun. The serial number of this gun is 50460 which puts it at a 1912 vintage.
I feel that I have enough 12 ga components that I'm pretty certain they built a specific receiver for the 20 ga.
By across the faces I assume you mean through the centerline of the pins? If so, that is 2.02" and the pins are 1" on center. The side plate measures 1.13" x 4.5". Here's a picture compared to the 12 ga I bought which is .17" taller (or wider in this pic).
Here's a picture of the receiver with a mock up of the cocking rod. Looks like the rod for the 12 is .1" taller.
Not sure what I'll do. One thing it seems is that there were very few 20s made.
I'll probably also talk to some of the folk on the LC Smith forum to pick their brains how some of them are built. For that matter if anyone on this forum knows of any model that is of similar construction, I'd like to hear from you.
Kirk
