This is any interesting topic.
I have several examples of wide ribs, "normal width", and a very narrow.
My 34" 16 has the most narrow rib I have ever seen.
Some 30 "ers are very wide.
My only conclusion is somehow it relates to overall barrel weight. Just another way of achieving desired weight/ etc.
I will say I have seen more wider ribs on shorter barreled guns and the narrower ribs on the longer barrels just like your example above, Mr. Day.
Give me a day or three (more like till this weekend) and I will get some pictures of 30", 32", and 34" examples posted.
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