Re: No one shoots a 30-40 Krag
I've got a # 3 in 30-40 as well. I've had better luck with 4064 and 150s or 165s in my rifle. With 180s, either 4064 or 4350 worked fine, but the accuracy edge went to the 4064. Varget should be another good one in this fine caliber. My Ruger shoots all bullets weights well from 150 on up.
This isn't a magnum case, so keep that in mind, but it's not as enemic in the strong Ruger action as it needs to be in the Krag action. Throats are fairly long in the Ruger, so you can seat bullets out, increasing case capacity some and running lower pressures. The Hodgdon manual has data for this caliber in "strong" actions that allow you to get all the oomph out of it, as long as you use the H powders. I was easily able to reach 2800 fps with a 150 gr pill in mine.
Recoil with that carbine stock sucked, though, so I switched to a B&C synthetic made for a #1. It fit great, and made it a lot nicer to shoot. If you stick with Krag level loads, it's fine in the factory wood.
Current dies are readily available, and it sounds like you already have some brass. Have fun with it!
BTW, what part of NW Arkansas are you in? I lived in/around Fayetteville for 4 years, and come down for 3-5 days over Memorial Day weekend every year.