I had heard that about the 64 gr Nosler, but wanted to give it a try anyway. I sort of figured that since I had great loads for the 63 and 65 gr Sierra bullets, those loads should be close. That did work out very well. I was using H335 powder and CCI 41 primers. The good load was either 24.2 gr or 24.3 gr. I forget which, and the workshop is locked right now. I will say that loads on both sides of the final good load were pretty ugly, so I suppose we can consider it a picky bullet. The 65 gr Sierra, in contrast, is an easy bullet to load up.
