I'll try to contact them today.  They offer .303 British... so there's no reason they couldn't offer 30-40 too.

Encouraging news!

I wrote to Colorado Custom Cartridges. LLC a couple days ago and received a nice letter from them:

Hi Paul,

Been many years since I shot at Perry. Good memories for sure. Your correct the brass for the Krag has all but dried up. There seems to be always a couple guys on gun broker that think the brass is gold and are skinning people. WE do not play that game. I can make krag brass from either .405 Win. It's dimensionally super close. Another caliber is the .303 British. It's is functional and depending on the chamber, may be useable a few time (reloaded) after fire forming. The .405 makes a great case BUT!! has several more steps to make it "correct". This means neck turning and correct sizing. Both calibers of brass are readily available.

We do load for several match shooters using a variety of calibers. Depending on the degree of accuracy you are in search of we can go either way as brass. Remington will "some day" run this again and there is rumors that an importer is making noise of making this caliber also. Are you shooting .308 or .309 diameter bullets? Another point of interest is that the .303 British reformed case is short! 2.215 in comparison to the Krags 2.3142 Having not shot this short case myself, reports are that they worked fine. I would choose to test some before ordering a quantity of ammo.

Let me know your thoughts. We are always up for a good challenge and "match ammunition" in this caliber is way over due.

Regards

It sounds like these are great people who understand the problem.  This might work out to be a great solution to our ammo issues.  I'll write back and ask for pricing on loaded ammo, and formed brass... and let you all know.

Hornady has been producing 405 Win for the pass few years.  I have a Ruger #1 in 405.  I found the 30-40 ammo in San Diego area. 
I contacted Winchester, Hornady, and Starline about making 30-40.  Hornady answered me saying to check their list of brass at the end of the week.  that list is what they plan to produce for 2017.  I haven't seen 30-40 on there yet.

It appears we've pulled enough chains that Remington will relent and produce some ammo!  Sportsman's Guide says they will have ammo around November 14th!  I'll be watching for the brass overage to hit Grafs and other suppliers, if there is any.

(You need to Login to view media files and links)

It appears as though MidwayUSA is expecting HSM .30-40 Krag 165gr RNFP on 11/11/16...

(You need to Login to view media files and links)

Cast bullet Paul, no way it's beyond Krag pressure levels.  At that price, I'd buy something jacketed before I'd even consider it.  Flatnose likely equals no feed.  In other developments:

I got some of the PRVI blanks I pictured earlier in this thread. The neck and shoulder are not annealed like their brass for loading. I can't just simply size them down with the bolt as I do the reloading brass. They have to be run into a 30-40 die with the expander ball removed. I adjusted my die slowly downward till the bolt would just close on my parked Krag, which I know has the tightest chamber of all my rifles. They'll even feed through my parked Krag, if I only load a couple in the magazine. Blowing out a few scheduled for tmrw.

Update:  I fired off a few of the blanks that I'd sized down to 30-40.  Some of the necks split following the crimp, one down enough that I won't be able to get a full length 30-40 case out of it.  Looks like disassembly is the best way to go, gotta find my tubing cutter!  I shot them along toward dusk, pretty good fire ball and report!  Fire ball had a blue color to it, the empty had that nice smell of high nitro powder.

I just picked up 35 rounds/brass of old Winchester from a guy for $10.00.  Not too bad for these days I guess.  I'm looking at it as brass only since some of them are old 180gr super speed and the others seem to be possibly someone's reloads...  9 of the reloads have been fired and the rest of the box is loaded. (They wrote on the box what they did: 47g IMR 4350/ 150gr Hornady Spire points but the un-fired ones look like virgin cases.  Not sure if they just bought the brass and loaded them up or if they are once fired already?)  I don't know anything about old Krag super speed 180's so I think I will just disassemble them and use the brass.

Following up on the blanks above, seems I got lucky with the tubing cutter on my first attempt.  It became too much work and a pain.  So now I'm running them up into a file trim die and cutting the tip off with a jeweler's saw.  I forgot I had that file trim die, didn't like it because it sets the shoulder back rounded, like a new case.  Since I have to anneal them anyway, that's ok for these.  The head is .168 thick on the one sample I measured, comparable to a few 30-40 cases I measured at around .170.  PRVI .303 for reloading measures the same as the blank.