Stone Cold your probably doing more damage because the core of the bullet is slipping out of its jacket after going thru the skin on those deer and grenading them. Nosler partition at those speeds will either shear off its front end or lose the lead and shear some jacket material and leave a nice neat exit hole. You however did say that you killed the three deer with it didn' t you? Partitions in my experience are very accurate unless they are loaded in Remington Factory ammo where they really fail to impress me..