JB, I CYA'd my comment because of the time period. Books took longer to produce and a new product takes longer to establish itself, particularly back then.
There could have been a year and more likely longer, between the actual shooting trials and the "availability" of Nosler's but the observation made is about what it was when I first played with magnums. JW
When truth is ignored, it does not change an untruth from remaining a lie.