Hi all, it occurs to me that the old .30-40 would be about the perfect cartridge for the NEF. Less pressure than full throttle modern rounds, but better ballistics than the .30-30, and you could have spitzer loads without worrying about some damned fool stuffing them in a levergun. Aside from the rim size, it looks like the .30-40 has larger case dimensions everywhere the reamer would bite steel rather than air everywhere. So I guess after a ream job the only big task would be modifying the extractor?