I should've put a space between 4 and Oz. I meant folks would pay 4 Oz (32 vs. 28) to have the COAL. There was a "short" magnum version too, but I don't recall if it was a 28 or 32.
The 28 as a "Short Mag" action w/3.34" mag box would probably suffice, but, then @ 3.34", is it really a "short" action?
I guess what I was really getting at is that I wouldn't offer less than a 3.7" box for anything in the 62MM-68MM case length families ('06, 264/7Rem/338, 300Win, etc).
Ah, my bad. We're on the same page. The 32 makes the most sense for those.