When I first started hunting I used the 30-30and then the 243 with partitions for a few years.Almost all of my deer ran a fair distance sometimes 100 yards.I have taken the last 30+ deer using rapidly expanding ballistic tip bullets and cartridge with muzzle velocities of right around 3500fps.Amazingly most of these deer dropped on the spot or within a few yards and not one made 50 yards.Either the deer used to be much tougher,or the faster moving,more rapid expanding bullets do provide much quicker kills.I have always used lung shots so bullet placement is not a factor.