Can anyone tell me where I might find a size die. I have looked all the die places I know of.

Google "CH4D dies", they make more weird stuff than most anyone.

aint the rimmed and not rimmed the same except the shellholder?

The rimless is shorter and fatter.
Lyle

I have both Redding dies and custom BR dies. If you can't find Redding you might have to get BR dies.

The 7 R is a 30-30 case, close to the 7 Waters.

Buffalo Arms seems to carry most obscure calibers.
http://www.buffaloarms.com/browse.cfm/2,170.html

I found them at Redding and CH4D.

Yuman, I have the Wichita 7R that I used to shoot IHMSA with, 10" barrel. The most accurate load I ever used is with the 154 gr Hornady and 18.4 gr of SR 4759 at 1633 fps.
I could never get a light bullet to shoot for deer hunting with any powder. I had some Varget and called Hornady for a load and they said it is too slow. I tried it anyway and believe it or not it worked, giving me 1/2" groups at 50 yards when all other powders just sprayed the target. I found 34.5 gr with the 120 gr SSP bullet is perfect. Have not shot a deer with this bullet yet, too many revolvers but the 139 gr was too tough on one I did shoot. Killed the deer but it never expanded.
The caliber is super accurate. The larger groups in this picture were shot at 200 yards and the small ones at 100.
The MOA 7 BR put 5 shots in the marked circle with a 175 gr Hornady while playing with loads.

I also have the Wichita stainless break-action single-shot 7 m/m Int-R, and Redding dies.

The most accurate load I have found yet for hunting with mine is the Speer 160 gr. bullet and 24 grains of AA-2230. BUT...in my pistol that is a HOT load. I would drop it at least two grains to start with in another gun, maybe more.