I have a question about Barnes triple shock bullets and elk. This year I shot a cow elk with my 30.06 using Federal Premium 165 grain Barnes Triple Shock bullets. All shots were at 190 to 200 yards. The first shot was broadside and held just behind the shoulder. I shot all three shots from a sitting position on a Harris bipod. The first shot hit hard (heard thwack). The cow just stood there and hunched up her back. I knew the hold was good…the trigger pull was good and there was no wind. She was acting like she was gut shot. She took a few steps and was turned away (butt to me). There was another elk right behind her so I could not shoot for about 3 minutes (seemed like 20). Finally, the other elk moved off. The next shot I could just see her right side ribs so I held just behind the last rib. The hold and trigger pull were good and heard a good thwack. She just stood there. She took a few steps and the third shot was broad side and from the other side. I held just behind the shoulder and the hold and trigger pull were good. I heard another good thwack. She finally went down after about another minute. I skinned her and examined the carcass and intact hide. There were two holes through and through just behind both shoulders (in the hide). There was a hole just behind the last rib on the right side in the carcass. One shoulder was completely broken down and one shoulder appeared to have a good size exit wound. That is only 5 holes (in the hide). The quartering bullet might be in the broken shoulder I haven’t processed her yet. All three shots were in the chest cavity and no shots were behind the diagram. I am wondering if I had bullet failure to expand problems. The hide has 5 holes and all but one is about the size of the bullet. One is larger about the size of a quarter. Is this a problem with the bullet or a tough elk? Any help would be appreciated.