Other than the rim, aren't the 30-30 Winchester and the 30 Remington the same? So the only change would/could have been the extractor and ejector?
I've bee loading for my 30 Rem with 30-30 Win dies for years. Seems to work.
Doug
Load data for the .30-30 Win. and 30 Rem. is interchangeable, but the cartridges have different dimensions....