My best guess is, whenever they set to testing loads (whether it's jest usin' Quick Load, 'er actually shootin' 'em), it's little more 'n a whim that dictates which loads they're GONNA test. The ones that don't exhibit any problems, they publish. Ones that do, they don't publish ... along with the ones they never even tried.
Look at any two manuals ... not only are they not gonna be the same ... it's not at all uncommon fer 'em to contradict each other.
Even on one manual, even on the same day, it'd really be something if the guys testing would think to actually ATTEMPT to test the same exact loads, in comparable chamberings ... or even overlap 'em.
And that's not even accounting fer when they publish out 'n out ERRORS.
That's why it's always best to correlate 'tween AT LEAST two reputable sources ... bearing in mind, even then, one's likely to be more "conservative" than the other.
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