I prefer heavier for caliber bullets they are both better in terminal and ballistical performance down range. Forget speed at the muzzle. All said what shoots best is always the best choice, I certainly wouldn't shoot a 180 if the 165 shoot noticably better.

In terms of the accubond I have harvested moose, elk and deer with this bullet it works, not an issue to report. Good choice as long as it shoots well. JMO but using a premium type bullet is never a bad idea, especially when elk or larger game are on tap.