Frankly, I think it's a cult thing. The .270 is so ingrained with the O'Connor cult, and has been ballyhoo'ed for so long, that there is no range of emotions concerning the .270 and O'Connor...you either hate both or you love both.
Except for the fact when I started using one about 27 years ago, I'd never heard of JOC. I used it because it's what my dad had in the cabinet and it flattened every deer I shot with it. I heard of JOC long after that and after the 270 had proven itself with me as a top notch cartridge on it's own merits.
