WAM, I sincerely doubt the BC's of the 225 AccuBond and Partition are as close as the .430/.421 Nosler lists. This is based not just on the "form factor" of both bullets (especially plastic vs. softpoint, boattail vs. flat base) but some experience with shooting both of them at ranges beyond 100 yards, along with plenty of other AccuBonds and Partitions of the same caliber and weight.