Certain cartridges
- Thread starter Doc68
- Start date
I'm no expert by any means, but I've done a lot of reading. From all that I've read the answer is yes . . . it due to specific design (like down to the angle of the shoulder). And it seems it's not one particular feature of a cartridge, but the combination including the projectile loaded into it.
It's been a while, but you might find something that addresses that here.
There’s surprisingly little written about this that I can find. It seems like some cartridges are known for inherent accuracy (the 6 PPC and 6 BR families, 300 WSM) although I don’t know if this has ever been rigorously tested. They tend to share relatively short, fat cases with capacity not particularly over or underbore and velocities around 2800-3000 fps. I’d love to see something from an engineering or scientific perspective on what makes a cartridge accurate, not just speculation on things that may or may not really make a difference.
I used to buy into the theory, and still do to some degree. 30 degree shoulder, shorter cases, longer neck. But even before the time I had heard of it, some wise guy blew the shoulder forward on a 6 BR case and it was setting records all over the place, and 300 WM has always been around.
Conjecture and speculation is a dominant force in shooting, from the guns, to loads, to the gear we choose.
That said, I would bet an asston of money developing a load for a 25 creedmoor will be easier than for a 25-06 for 99.8% of people.
Conjecture and speculation is a dominant force in shooting, from the guns, to loads, to the gear we choose.
That said, I would bet an asston of money developing a load for a 25 creedmoor will be easier than for a 25-06 for 99.8% of people.
I'm not saying this as fact- just my opinion.
Case design is overrated... and I don't buy into the "inherently accurate" part either. Take a case that has the "wrong" features and chamber a premium barrel for it- and they shoot. Yes- 6br is incredibly easy to do load development for- but look at the barrels on them. Would 6br be as forgiving if it was chambered in featherweight barrels? How the cartridge is perceived and marketed has a huge effect-- and plays into what contour/quality of a barrel becomes the standard.
Some cartridges are definitely more efficient- and that makes things nice. If you can get good velocity with less powder then that should make things easier to be consistent. But barrel outweighs case design... as I see it.
Case design is overrated... and I don't buy into the "inherently accurate" part either. Take a case that has the "wrong" features and chamber a premium barrel for it- and they shoot. Yes- 6br is incredibly easy to do load development for- but look at the barrels on them. Would 6br be as forgiving if it was chambered in featherweight barrels? How the cartridge is perceived and marketed has a huge effect-- and plays into what contour/quality of a barrel becomes the standard.
Some cartridges are definitely more efficient- and that makes things nice. If you can get good velocity with less powder then that should make things easier to be consistent. But barrel outweighs case design... as I see it.
You should argue this point with the dude from the Sherman line of cases. One thing, barrel dia has absolutely nothing to with how accurate a rifle can be. It may play a part in just how long a barrel can be accurate in the form of sustained rate of fire.
Efficiency should play in all around accuracy too. I use the bottom right hand number in QL a lot, higher numbers equal greater accuracy in my world.
Nothing, it was a comparison, if for no other reason the amount of modern data for the creed case compared to 25-06.
There seems to be something magical about certain cartridges. It may be a combination of case capacity, bore capacity, neck length, shoulder angle, ect ect. I consider the 308 to be one of them. The 300 WSM, 6BR, 6PPC and several others are too. Those are just a few of the ones that I have experience with. No doubt there are others.
