Here is what I posted in 6.5 thread....

New Proto-type 6.5 SAUM brass from Hornady. I got a handfull to test and run thru the paces. Here is what I figured out so far...

h2O capacity is 72.5 and the new cases weigh average of 230.75 with 1.2 GN difference.

My Rem. 7saum weigh average of 219.6 with a 3.7 GN difference.

The new brass is far more consistent !

Necks, case weight, and run out is excellent ! Shoot the crap outta them and see how they hold up. Will post more as it goes.