Hal
Yes for the rifle caliber
I would suggest Cartridges of the World as a valuable tool
One of the older cheaper ones would work just fine
http://www.ebay.com/sch/Books-/267/i.html?_from=R40&_nkw=cartridges+of+the+worldPM me if I may be of assistance
And I would certainly investigate the 9.3x72R cartridge
http://www.cheaperthandirt.com/product/61944Mike
9.3x72R specs
neck .385, base .427, rim .482, length 2.84, ctg length 3.27
There is a 9.3x74R but this should be too large for the chamber and also
not made in the time period of your firearm.