I don't know about 105 grain bullet. I went antelope hunting last year and my buddy was using a 6MM with the 100 grain Federal Premium load of 100 grain Nosler partition. He shot a nice buck antelope at about 150 yards, the bullet went thru both shoulders. The buck went about 30 yards before he dropped. The exit wound was about the size of a plum----I would try that load BT----I was impressed.