Yes and no! It is the opinion of many people. Unlike a lot though I do not pull my opinions out of my rear like talking points. I am not a belief oriented person when it comes to bullet construction, powders, cartridges I am more of a numbers man. Belief which is what 99.9% of humans base their daily decisions on are seldom ground in anything remotely resembling a fact. That is fine for romantic relationships and religion we call that "Faith" or "Belief" it has no place in rifles, powders, bullets etc....
No in this case I am basing it on personal observation and secondly on the observations of many many people that I know that both hunt and shoot competitive and their observation.
I would say this though how many solidly constructed controlled expansion or partition type hunting rounds are there that are also VLD. My opinion about the 243 is not opinion it is a 100% fact based on a lot of testing on larger game like deer. When you shoot an animal and then exam the bullet and how it behaved inside the animal that is fact not fancy. You can see if the jacket separated with your eye's. You measure how much it expanded. You can track the wound channels. You can weight all of the pieces and count the number of pieces a given bullet broke into. Anything you can measure repeatably is empirical evidence. If you do that enough and get repeatable results that is as good as it get's. I clearly stated I was talking about deer sized game and larger. There is no voodoo in bullet design especially when talking about hunting.
When you start shooting at extreme range it is like the wild west since you can not reasonably guarantee the bullet has enough speed to expand so it can go both ways for sure!
Magnums have always had issues with jackets on hunting cartridges because at close range the velocities can be insane and if you hit structure instead of soft tissue the bullet can easily disintegrate on impact or have it's path changed from the one intended by the shooter this was the idea of the 5.56 Nato they wanted it to break apart inside, tumble, and bounce around inside the body. They wanted to wound men not kill them out right because that is a bigger logistics suck than a clean kill if fighting another Army and no insurgents. So they went with a high velocity cartridge that was not that heavy and not too stoutly constructed. That is why heavy for caliber medium velocity heavy jacket soft point bullets are more reliable to be lethal than VLD hyper velocity rounds. The problem is that sort of bullet lacks the flat trajectory a lot of people think they need. That means you have to stalk the animal not just to find it but once found you need to get close enough for a clean kill. That is not the fashionable and trendy way to hunt today. Their is a reason dangerous game cartridges do not use VLD modern bullets. If someone wanted to modernize a Nitro Express Cartridge and have custom reamers made it could be done easily but we already know that does not work well. Anyone that has hunted with black powder muzzle loaders and not used modern projectiles can tell you that if and when you hit the animal it is not running a long way away from you. Tracking it down is fairly easy because the blood trail is huge. On the other hand think about what happened when people tried using the 22-250 on Elk when it first came out! It was not a good thing at all. Not that that stopped the idiot gun writers of the day from trying it repeatedly.
For the record the recoil on the 6.5CM and 6.5 PRC is greater than it is on the 243 Win, 260 Rem or the 6.5x55 Swede. Which people always seem to leave out of the discussion. That is not a huge deal for a medium stature man on up but for smaller stature people like women and children it might be of note.
Any time you make a bullet VLD it is difficult to keep it's structural integrity up to par for a modern hunting projectile. It is also difficult to find ones that shoot good in a factory rifle due to slower twist rates used by factory produced rifles. You normally have to use a lighter bullet than is ideal on the game your hunting if it is not wearing a custom barrel. This is why a 220gr round nose bullet in a 30-06 will stabilize just fine in a factory rifle or a rifle with a 30 year old twist rate. Try to stabilize a 210gr-230gr VLD in that same rifle and good luck! The thicker you make the jacket and the more things you add to the bullet like a partition or interlock rings the more variation you have from projectile to projectile in all measurable parameters.You also want a harder alloy for hunting than you would use for a target round or for light varmints. That is why a great target load is not a great hunting load and the reverse is true too. Every parameter of a bullet design is a trade off. You do not get to have it all and a free lunch too!
For target work assuming your rifle will shoot them well is the best thing since sliced bread. In a hunting situation though the VLD's do not make a lot of since which is why all the premium bullet makers make some hunting projectiles in 6mm and 6.5mm that are not VLD at all especialy the premium companies that will never do the volume of Hornady or Sierra in the USA.