A lot of fragmentation was not considered a good thing and I will say all three of the bullets I listed opened pretty quick in the average deer bullet weights for the caliber in question. There was a time way back in the 60's and early 70's when bullet companies would post little ads mentioning that their bullet would stay in the animal thus delivering all it's energy. Hornady RN's in particular. There were many fast openers like the Winchester OPE, Remington Bronze tips, and back then Sierra bullets were very soft. Bullet performance attributes go through phases, were are just making the rounds. Currently it is plastic tips, thin jackets, long bullets and fast twists. Interestingly we are returning to what the Mauser rounds gave us way back in the olden days. 7MM Mauser, 6.5x55, 6MM Lee were known for long bullets and fast twists but no plastic tips. The most popular hunting bullets had round noses. I loaded Hornady 100 gr. and Speer 105 gr. Round nose bullet for hunting in east Tx timber way back then. The Hornady was an especially soft bullet. Inside 200 yards complicated bullets are not needed. Neither is velocity over 2600 fps.