Since its invention in 1948, the Nosler Partition has been the gold standard for big-game bullets, undergoing only one change in its 50-year history. But Winchester and Nosler, pooling their expertise, decided they could improve it, and durned if they didn't. The new slug-the Partition Gold-is a much stronger bullet than its illustrious predecessor (which is still available) and will out-penetrate it by a considerable margin. It's even moly-coated to cut down on copper fouling. Winchester loads the Golds under the Supreme label in .270, 7mm Remington Magnum, .308, .30/06, .300 Winchester Magnum, and .338. The bullets themselves are available to handloaders from Nosler under the label Combined Technologies, which is a pretty vapid name, but who cares?