I have used these bullets on Mule deer , Elk and feral hogs. Anyone with much usable experience with thes bullets on Whitetails. I have use the 100 grain 6MM partition, the 150 grain .277 and the 200 grain in 30 caliber. I have a bunch of them right now in 7MM, 140 and 160 grain bullets planned for my 7MM Remington magnum. Some will end up in my 7x57 also.