I think what's being missed here is what a guy wants to be able to do when he goes hunting. Do you want to have to fuss over animal's presentation and wait for things to be "just right", or do you want to be able to work with whatever it is that gets thrown your way as an opportunity? I'm not advocating taking low percentage shots. But a .223 shooting a match bullet is going to limit what you can do -- and it's going to limit it a lot. Sure, if a deer is standing 200 yards away in a farm field and you can take your time and wait it out, a .223 is probably going to work just fine with good shot placement. Of course it will.
But it's those other opportunities that put a bullet to the test. Let's say that deer is an honest 170" whitetail that just jumped out of its bed in thick timber 50 yards from you and it's headed away from you into even thicker stuff as fast as it can go. Your crosshairs settle on it just as it's got all 4 legs off the ground and is clearing a fallen log. And you have a better view of the tail than you do of the head. Did I mention it's 170"? With a .223, that's an absolute no-shoot scenario -- at least it is for me. But with the rifle I hunt most of my deer with, it's very do-able. Because I know that a monolithic .30 cal bullet is more than capable of shooting the entire length of the animal and doing significant damage the entire way.
What's being missed in much of this discussion are things like surface area, jacket construction, and bullet momentum (mass x velocity, without squaring the velocity number). A .22 match bullet with a J4 or similar jacket wants to start deforming and coming apart when it hits so much as a blade of grass. It's simply not made to delay expansion until a bit after it hits an object. For sure, some guys have success using TMK's on larger game. But go ask Sierra, the manufacturer of the bullet, if they think it's a good idea. They've been very, very clear on this over the years.
This really isn't a new idea. Berger started it long ago with their view that a rapidly expanding match bullet is just the thing for long range big game hunting. And for sure, guys have had a ton of success with that approach. But when shooting game at long range standing more or less broadside in an open area. It's a specialist's game. But that's not how most guys hunt. When I step out of my truck in the morning, I don't know if I'm going to get my chance at 50 yards or at 500. I don't know if it will be way down a cutline, across a pond, or just on the other side of that tree I can almost touch. And until the second it happens, I have no idea if the animal will be standing, moving, or even running -- and God only knows the direction it will be moving in. It's a lot to process and often without much time to do so.
For some of those situations, a .223 will probably work fine. But for a lot of them it won't. It's ridiculous to assume that most guys will pass a shot at a B&C trophy animal that is almost close enough to touch but which is running directly away from them. They're going to try to put it down, right now. But they absolutely need a bullet that's going to do what it needs to do in order to make that happen. It simply cannot come apart on them, and it has to travel a good long way after the point of impact, holding together as it does so, even if it hits heavy bone early in its journey.
This is equally true when the animal is facing them. I was on a hunt with a friend a few years back when he was presented with a bull moose about 70 yards away in cover so thick that he had to look at it in the scope for over a minute just to confirm it was a bull. It was. But all he could see to shoot at was one eye, one ear, and perhaps 3 square inches of the forehead. He made the shot quite handily with his 7mm Rem Mag and only then discovered that he had just shot a 51" moose. Could that have been done with a .223? I suppose many would say yes. But I'm skeptical. A moose skull is not a lightly constructed bone, and the forehead is sloped. There's a very real chance that a thin jacketed, fast twist 77 grain TMK would have blown apart on the bone or simply deflected along the surface of it. I just don't get why it's worth taking that kind of chance of a bad outcome.
This notion of surface area and momentum is the very thing John Taylor wrote about so long ago when he tried to rank the effectiveness of various cartridges on elephant -- and he was one of the very few people who ever shot so many of them as to have a statistically valid sample size to draw his conclusions from. Assuming adequate bullet construction, he concluded that penetrating 3 feet of bone consistently required momentum, not energy, of a sufficient value, and that the momentum required diminished somewhat as bullet surface area increased. Much of what he wrote still remains as gospel in Africa to this day, although in a simplified form. For elephant, it's widely accepted that a muzzle velocity of 2150 fps is what is needed, with a bullet diameter of .40 cal or larger. As Winchester found out when they first launched the .458 Win Mag, 2050 fps is decidedly not enough -- and the cartridge got a bad reputation among African PH's very quickly until velocity was bumped up to the accepted standard. The evidence was in the number of botched frontal brain shots that should have worked. And the .40 cal minimum is also a thing. That's why the .375 H&H fires a 300 grain bullet at over 2,600 fps, because Holland & Holland knew that 2150 fps was not going to cut it on elephant with a bullet that narrow. They actually tested it on elephant skulls until they had satisfied themselves as to what was required, and part of that was ensuring that the bullet was heavily constructed.
I know we're not talking about shooting elephants with a .223 -- but the point I'm trying to make is that penetrating heavy bone on any animal requires a few key things. Sufficient momentum. Sufficient surface area. And sufficiently stout bullet construction. You probably can kill an Alaskan brown bear with a side brain shot with a .223. But I have yet to be on a bear hunt in which I could be that picky about the shot opportunity I was going to accept. Or really, on any hunt. My job is to find the animal I want to harvest. That animal's job is to keep me from harvesting it. The bullet's job is to give me the widest possible range of options as I decide what I'm going to do with the opportunity I have.
But then again, I'm a Fudd
