It may be either Nobel Pistol#2. Or Nobel Rifle#2. Two different powders and applications. I used to have load data for a lot of those Nobel powders, at one time. Long since disappeared. As I recall, Nobel Pistol#2 was fairly close in burn rate, to Unique. I am relying on memory here, so don't take this as accurate information. Rifle #2, was more suitable as a cast-bullet powder for cartridges like .308 Winchester and, .303 British. Again, working from memory alone (was at least 30 years ago). As already mentioned, your best bet is to call Higginson directly.