Bullshit! They all are!

Can anyone tell me which modern case is inherently inaccurate?

Buy this latest and bestest magnum belted case, very accurate. This rimless magnum, accurate. This short straight walled rimless magnum. Designed for accuracy. This creedmoor, wonderful accuracy. This whatsitnewfucka case, designed for accuracy ...

No they are ALL accurate. The brass case designs matter little. Or do they ?

I have a .375 which shot one-third MOA 3 shot groups with RWS 300 gr KS ammo. My .222 shot single bullet hole 3 shot groups at 100 metres with handload. Could shoot several different loads all within one MOA. My .30-06 is half MOA. MY 6.5x55 is sub MOA using factory FMJs. Even my .308 BLR can shoot sub MOA.

The old .22 Hornet can even shoot well. I am sure the .303 and Nitro Express cartridges can as well.

BUT it does depend heavily on good bullets. Consistency. Consistency of ammunition loading. Load development for that accurate sweet spot. AND good barrels. The right twist for weight and length. Decent rifle design.

None of my barrels are heavy. Some are whippy light. They still produce superb accuracy. I note I shoot 3vshot hunting groups. Five and ten shot groups might be very different.

I contend, for hunting accuracy, the case design matters Ffff all. Its other factors almost entirely. The talk about a case being inherently accurate is just "sell you a new rifle" sales mumbo jumbo jargon.

What do you think? Opinions? Is some case "inherently inaccurate"? Another inherently accurate? Why? What design features make it accurate?