European Sporting Cartridges
by W. B. Dixon, Armory Publications, Inc., 1997

Pages 97-98:
Includes an actual photo of the cartridge montaged into a partial cartridge lineup, top of page 97, and the verbal descriptins in a table continued from bottom of page 97 to end of page 98:

10.15x65R Express aka: 10.15mm Purschbuchse
Bullet diameter 10.03mm = .395" exactly.
Misleading metric nomenclature, eh?
Quoting Mr. Dixon's tabulation:
"Loaded by DWM (case #498) from c1905 (not in the 1904 catalog) but not apparently listed in post WWI catalogs(?). Found with both DWM numbered cases and also proprietary "H T & Co 10.15" hs (unknown but may be E.H Tanner & Co known c1913)."

In the ascending nominal caliber tabulation on page 98, the cartridge listed before it has no picture and no specific bullet caliber listed:

"10x82R aka: 400 Express"
"This is the European title for the English 400 3-1/4in BPE which was produced in Germany by RWS/Utendoerffer. Roth also produced a 10x60R which is a unique 2-3/8in version of this caliber and can be found in the Austrian Miscellaneous section."

I am sure we will dig up some more.
This makes three antique .395 caliber rifle cartridges I have heard of:

1. Old Martini .395 caliber black powder cartridge of unknown specifics.

2. 400 Nitro for Black Powder (3")

3. 10.15x65R Express

Anyone with anymore .395 caliber information please do tell.


The latest find is GSP42 in the lineup and table below, this being from the section of the book called
Pre-WWI: Miscellaneous Rimmed Cartridges.