Hornady announces 22 ARC (22 Grendel)

[Old Bob]

I'm wondering what the case body length to the datum line is. That seems to be a more important measurement to someone who may want to convert either 6.5 Grendel or 6mm ARC brass to 22 ARC. If the body length is the same as 6 ARC, that would pretty much be a no go because of the short case length. After resizing their necks, I suppose you could fix their body length by fire-forming them but that would be a royal PITA. And they'd still be too short.

I'm also wondering how available will 22 ARC brass be. From experience with 6 ARC, any reloading at first will be with once fired brass or resized brass with .441" heads.