For humane kills I would recommend the 243 for your intended purpose. Though my brother just killed a 9 point white tail using a 55 gr Monarch soft point, he was plain lucky. Deer was at 100 yds bullet took out both lungs. My brother is a great shot but in this case I still say he was lucky. The bullet never struck bone, it went between the rib cage. I believe had it struck bone the circumstance might have been different. I am a firm believer of behind the ear shots with such small calibers.
ONLY TWO DEFINING FORCES HAVE GIVEN UP THEIR LIVES FOR YOU. ONE IS JESUS CHRIST FOR YOUR SOUL AND THE OTHER IS THE AMERICAN SOLDIER FOR YOUR FREEDOM.