Small Hughes cam in 318

Stock pistons, no eyebrows, .046" in the hole. I've calc'd CR numbers with .027, .039, milling etc. I just found it odd that they would rec. that low a CR with that long a dur., (269* & 61* ABC) which then made me question what I was seeing on the degree wheel, ya know, was I reading something wrong? Anyway, it is what it is. Thanks guys.