It really makes no difference in the case size, it's the placement, and energy of the bullet that counts. If the case was 5 inches long the bullet will have greater energy , but it's the same bullet. I have been personally been involved in two 7 X 57 kills. Both went fine, but the second required a backup shot with another rifle. It was hit a little far back and made it to the top of the ridge, stopped for an instant, and was finished with a larger caliber. There is nothing magical about any particular cartridge, its always the same factors, placement, and energy. More energy allows one a greater margin of error, but placement is the key. As was once said, "bring enough gun", was a result of a high velocity small caliber rifle failing to take down a hyena, The animal was attempting to eat a couple of folks and was dispatched by a 470 Nitro Express. Most likely overkill but still a lesson. Hence the phrase "bring enough gun".
