2 1/2 vs 2 3/4

[Kensal Rise]

Most low velocity/low pressure 2 3/4" loads will be fine. And in this case skivved plastic cases, like Win AA or STS, are preferable to paper.

[MIKE FISHER]

Thanks. Very good news in that AA is my hull of choice.

[Bruce Day]

Originally Posted by John Campbell

Most low velocity/low pressure 2 3/4" loads will be fine. And in this case skivved plastic cases, like Win AA or STS, are preferable to paper.

What is the factual basis for this statement? Any Parker documents to support it ?

What specific pressures and velocities do you mean and what is the source of that information ?

And why are paper shells such as Federals inappropriate ?