You don't need a premium bullet for deer. They are easy to put down with proper placement. I like the 140 grain Hornady btsp. It plain works. Even elk and moose fall down when it is placed where it is suppose to go. If the premium bullets are such a great invention, how did our ancesters manage to survive when subsistance hunting with plain old lead cast slugs. The premiums have their purpose, but for deer, they are not needed, as a cup and core is more than adequate. I use partitions only on things that can and will do you a world of hurt, given the opportunity.