Can the .284 case push a 180 to 3000?
The capacity twin to the 338-284 is the 338-06 and 3000fps is right at the outer limits of ability for it.
My source of load data for the 338-284 is loaddata and they have no loads shown at 180gr.
The .350RM case should be capable of holding 4-7 grains more powder so 3000fps may be more easily reached with it.
I'm still liking the 338-350RM