RogerK-

I suspect you're confusing the .270 Winchester with the .276 Pedersen. The story is told in Hatcher's Notebook, pages 158-169. Ken Waters wrote an informative piece about the .276 Pedersen in Handloader #131. Both this article, and Ken Howell's cartridge book have drawings of the Pedersen.

Capt. Grosvenor Wotkyns wrote a glowing report of the .276 in Hunting & Fishing magazine of January 1929.

--Bob