I got reamers from PPG to do just that for 6.5 and above.

ok was just wonder who has done this if it has been done...and why remington didn't go this route to begin with?

dakota and in the states more is always better!
woofer

any idea on case capacity?

It really is so close to a 7mmDakota it wouldn't make since to go wildcat. Case cap. is very close to the 7STW. I have a Ruger #1 rechambered & w/ the 26"bbl. I easily hit 3250fps w/ 160gr bullets, 3350fps if I push a bit, but why?

Au contraire, Fred. The sense is in the cents. Those Dakota cases ain't cheap. Nor Jeffery.
If one was to make a shortened RUM, I could see the reasoning.
Get a 375 RUM (CRF, of course!) and use the older cases trimmed down for your 7mm, and you'd have quite a two-gun battery.

You're right @ $1+ each they are not cheap, but brass life is very good. I have a batch of test case I have fired (6) times now & only had to trim once, everything is still tight. In a pinch I could make cases from a RUM case (I made some test cases for my .404 from .375RUM) but I bought 200 Dakotas & that will probably last me the rest of my life (I have too many other hunting rifles, dont' tell the wife though).