Without being so maladroit as to ask for (precise) measurements of the narrow ribs illustrated above, let me just say my wide rib K-22 (that isn't supposed to be a wide rib) is configured as is the "wide rib 17-2" shown---which is to say it too has borders on either side of the grooved portion. So much for that!!

Now---same church, somewhat different pew-----------I once had a pre-war 357 that was "too small" (Which is to say some parts of it, most notably the barrel were visibly smaller than normal---whatever "normal" is.). It was enough different that I measured it---and some of it's "normal" brethren. Then I called Jinks. His response: "You can't tell anything by that!!" Now--before he said that, he scoffed---and after he said that, he laughed---just to put me in my place.

Ralph Tremaine