I've witnessed it first hand but it may be irrelevant because the issue has since been fixed. In 1984 I had a Steyr Model M Professional in 30-06 that shot the Nosler Solid base bullet really well, under 1/2 MOA. At that time in Arizona you could take two Coues Whitetail Deer and I regularly did that each year. I had no problem with those bullets at all, Coues are really small deer and even shoulder shots exited the opposite shoulder and killed quickly.
Then Nosler introduced the Ballistic tip and discontinued the solid base bullet. I found the 165 grain Ballistic Tip equivalent shot just as well with the same load, 57 grains of IMR4350 at about 2950 fps. But I soon noticed poor penetration on raking shots, such as quartering away shots. Then one day I shot a small buck I had jumped from his bed as he ran up the opposite side of a canyon, about 200 yards, the deer went down at the shot but just laid there with his head up. I watched him for a few minutes waiting for him to expire but he seemed alert and wasn't fading, so I put another in his neck.
I was curious what had happened so I opened the chest cavity to have a look (I usually use the gutless method and pack only the boned meat) what I found was that the bullet entered the right ham on a trajectory to take out the heart and lungs but had not made it to the diaphragm. I found only small pieces of jacket and lead in the meat of the ham and then into the abdomen which totally absorbed the impact with no hematoma even to the liver.
After that I switched to the Nosler 165 grain Partition and continued to kill them stone dead. A friend of mine that had shot some of my ballistic tip loads found them to be very accurate in his Remington 700 and asked if he could have the rest of the 100 rounds I had loaded. I gave them to him and described the terminal performance concerns I had, but he decided to use them anyway.
Then one day he and I were glassing for Coues when I noticed a slight and very blurry movement in the bottom field of my 15X56 Swarovski binoculars. Looking over them I saw a small Coues buck had fed up the slope we were sitting atop of glassing and was only 30 yards or so from us. I got my friends attention and he was able to slowly raise his rifle and take the shot as the deer turned broadside, unaware we were there. My friend shot him dead center of the shoulder and the deer collapsed with a cloud of hair and debris in the air where he was standing. Because of the angle of the slope we couldn't see the deer any longer so we both stood up from our sitting positions behind our tripod mounted binoculars and were shocked to see the deer laying there with head up and alert, the same as the small buck I had shot the previous year.
My friend quickly dispatched the young buck with a neck shot. As we approached the deer the entry wound to the shoulder was massive, about the size and also the shape of a football. I could see several fragments of jacket glistening in the morning sun in the entry wound. We took the shoulder off and I were surprised to see that not a single fragment had penetrated into the chest cavity. After that he also stopped using those Ballistic Tips.
I called Nosler and discussed the experiences I had with lack of penetration. They acknowledged that they had many similar reports and were changing the jacket design to correct the situation. The changed jacket design is what is now labeled Hunting Ballistic Tip and it is a very good bullet that penetrates deeply while still creating a wide wound channel.
Current bullets such as the Hornady ELDM and Sierra Tipped Match King are jacketed just like the early Ballistic Tips with a thin non tapered jacket and behave much the same. Now that I have much more experience and have seen several hundred big game animals taken with all kinds of bullets I choose to use these thin jacketed bullets on purpose but use them appropriately. They kill much quicker at long range than heavily constructed premium hunting bullets because they create a wider wound channel that provides more margin for error at long range and at the lower impact velocities they penetrate well. If I need to use them up close I simply choose a rear lung shot placement and the deer go down in a flop.
This was an interesting read and one I can relate to. Many years ago, when I first started handloading, I ran out of soft-point deer bullets and all I had left to shoot some whitetail does with was a box of Sierra Matchking 168-grain hollow points. This was with a 308, in a doe-only season in western Pennsylvania, when they were in "herd reduction" mode. I shot a couple of does, and my buddy used my rifle to shoot a couple more, and our results were such that we made sure that we never an out of "deer-shooting bullets" again.
The match bullets were leaving the muzzle at around 2600 fps, and all the deer were shot well inside of 100 yards. ( The two I shot were around 30 yards; my buddy's were a bit further out.) I hit one in the shoulder, and it made a horrendous wound. The deer died, but it was from a bone fragment that happened to take out some important plumbing in the animal's chest cavity. The other was a rib cage hit, just behind the shoulder. That deer died right away, too - one lung was jellied-up mess, and I found some fragments of the bullet jacket in the deer's heart. The other lung was intact, with zero damage.
The two deer my buddy shot all died pretty quickly, but they were also a pretty sloppy affair. Just like the ones I had shot, most of the tissue damage was from bone fragments - not bullet action. None of the animals had round, deep wound channels. All were irregular in shape, and we were glad that
something managed to get through to kill the deer.
A couple of decades later, I used the same bullet to shoot a coues deer in Mexico. It was a big buck, but its body was about the same size as the yearling does we had shot in PA so long ago. It was a 300 Weatherby this time, and the deer was broadside at 410 years when I shot it right behind the arm. It went down immediately, and the wound channel looked absolutely perfect. The lungs had a whole bored through them about as big around as a toilet-paper tube, and the exit would was about like a nickel. This thin-jacketed hollow point bullet performed perfectly, at a velocity that was several hundred feet per second slower than what we had been getting that day we stacked up all those does years ago.
I think the moral of the story is that when the velocity is right for the bullet construction, it will work OK. If you hit one with a lightly-constructed bullet at very close range, though, you might not like the results. These guys who use match bullets to shoot their animals somewhere in the next zip code are probably going to get favorable results, but I hope they keep a couple of rounds with a Nosler partition sticking out of it for the close-in shots that sometimes present themselves.