Its not just about velocity with the 7x57 being superior to the .303 or the 30-40 Kragicon. The bullet for the 7x57 is 40 to 50 grs lighter then the others and higher velocity. That translates into lighter felt recoil which adds in properly aimed fire. The 7mm is a penetrator. Just ask the 6000 Elephants Bell shot with the 7x57.