Thanks for taking the time to show more of it to us.  

If you didn't completely blow your Strategic Materials budget,  maybe Buffalo Arms has still got some of the brass. (I'm just as profligate with a friend's money as I am with my own. But this is a high priority thing.)

Would you mind if I downloaded a couple of these images?

Rick C said
Just a quick homemade comparison!

That illustrates how far back JMB had to get the 1895 bolt to withdraw for those torpedo-length cartridges! 

The Rangers were bold but intelligent men who thought it made more sense to deal with an enemy at 200 yards when possible. The 95 was superior in that respect to any other quick firing repeater, at least until the automatic Remington Model 8 came along. Even then,  the 30/32/35 rimless series could not match the external ballistics of the Krag, much less the 30 Govt '06. 

The Ranger in the photo seems confident and happy with his 1895 carbine. Some of them actually preferred the full length rifle. Further proof of the historical importance of Browning's last lever action. [excerpted from Venturino's lever action book, Page 257.]

https://www.buffaloarms.com/38-72-winchester-cases-bertram-ber3872win.html

And if worst came to worst,  somebody could wrap a 405 case with painter's tape for protection, chuck the neck and body into a half-inch drill, and reduce the rim with 60 grit paper, checking constantly with a pre-set caliper. 

Happily, I won't have to struggle with component-finding and modifying to run up 38/72 cartridges.  We can all vicariously enjoy friend Rick's journey through that particular desert and cheer him on while drinking cold beer. 

Unless the Aussies are still making some 38/72 brass, anyone waiting on Starline needs to bring lunch and a lantern, based on my experience with a backorder of .41 Colt brass. To their credit, they honored the backorder just short of its second anniversary. Amex let me know about the fact because I'd gotten frustrated and ordered 250 cases. 

Last time I looked, Hornady 405 brass was available but at scalpers prices.

Zebulon said

Bert H. said
The 38-72 case can be made using a 405 WCF case, but you will need to turn down the rim from .543" to .519".  The case lengths are identical as is the base diameter.  Simply squeeze the neck from .436" down to .397" and reduce the rim diameter.
Bert
  

In the absence of a lathe,  has anyone tried turning down rims with a drill press and a file?  
  

Zeb-

It may be worthwhile to measure the cases and see if the subject 38-72 bolt will handle them. Some older cartridges I'm familiar with the rim dimensions have varied a bit from nominal over the years, especially for non-SAAMI cartridges. I understand SAAMI has specs for the 405 but not the 38-72. OTOH I'd very much prefer to use correct headstamp brass if available.  

Mike

Zebulon said

Bert H. said
The 38-72 case can be made using a 405 WCF case, but you will need to turn down the rim from .543" to .519".  The case lengths are identical as is the base diameter.  Simply squeeze the neck from .436" down to .397" and reduce the rim diameter.
Bert
  

In the absence of a lathe,  has anyone tried turning down rims with a drill press and a file?  
  

Yes, I've done it.  You will be surprised how hard the rim is.  The diameter does not need to be perfectly round but just fit the chamber.  I was working on a set up to use my neck turner to trim the rims but never got it done.  

Bert H. said
The 38-72 case can be made using a 405 WCF case, but you will need to turn down the rim from .543" to .519".  The case lengths are identical as is the base diameter.  Simply squeeze the neck from .436" down to .397" and reduce the rim diameter.
Bert
  

In the absence of a lathe,  has anyone tried turning down rims with a drill press and a file?  

Bert