"...the Partition..." Thousands of black bears have been killed with one shot long before the Partition came along. Like RC says, you don't need premium bullets, Partitions or otherwise, for Yogi.
Nor do you need 180s. The same ammo used for deer will do nicely.
martinc64, you reloading or using factory? There's no game in North America that a .30-06 won't kill with a change of bullet. However, think 165 grain bullets, factory or handloads, for any game you care to hunt.
If you have a load that shoots well, sight in about 4" high at 100 and you'll be on target out to about 300. If you don't, you'll have to try a box of as many brands as you can to find the ammo your rifle shoots best. Then sight in 4" high and practice, off hand, at a 9" pie plate at 100 until you can hit it every time.