Regrettably, I’ve never run into a nice one when I had the money. I guess it will remain a void in my experience.
OTOH, for my use, Eastern whitetails in mixed hardwoods and brush, I lump all the major .30s into the same well, lump. My .308s get loaded like Krags or .300 Savages, and the ‘06 like a .308. If I had a .30/40, especially in a Krag, I’d probably load it like a .30/30. The parties on either end likely wouldn’t notice much difference.
