Every now and then I see something that leads me to believe that people expect more penetration when they are close to an animal, that may be true with something like a full jacketed army bullet since it is not designed to open up[ mushroom] but with any type of hollow point bullet when it in the top end of its speed range it will open faster and which uses up the energy carried buy the bullet and therefore it will penetrate less than it would at a longer range. If all your shots are close one of the all copper bullets, a nosler partition, a bore size conical in a heavy weight [405 Powerbelt or Sabre tooth with 80 gr powder or a 460gr ] 0r reducing your load might help. The core bonded bullets are very good but even they do have reduced penetration when used at high speed and close range. I have run into this some myself as on my own property most shots would be around 25 but when on the other property I can hunt I often get shots up to 220 through I often past those shots there is one very difficult 10 point buck I have been after for 3 years I would take any reasonable shot at, Lee