anyone have a source or know of anyone that makes this ammo.? I have a sauer drilling in this calib. and would like to use it.

If I recall, that is a proprietary caliber and has not been made for 100 years. or so. Not the same as regular 72r.

I am curios : can the drilling be rechambered to the common cal. I realize the regulation would then have to be played with.

Drillings aren't regulated except to the sights. Unfortunately, the Sauer is too big for any existing brass, even the 9.3x74 is smaller in the head, but it would work for this low pressure round; certainly you do not want to rechamber it to the 74r though. So, I would get a set of dies and make brass from the 9.3x74R; I will have to check on the rim though. There is really no brass suitable to make the Sauer from though. Some have soldered tubing onto .44 mag cases and formed those.

Sellier & Bellot

http://www.sellier-bellot.cz/e...oducts/caliber/1542/

A little searching here yeilded this info
"The little 9.3X72Sauer is often confused with the 9.3X72R straight cased round, but the Sauer & Sons cartridge has a slight bottle neck. The proper weight bullet for this round is a 186 gr, brass, and load data are no longer available. Short cases can be made from 7X57R cases, with a little work. A load for the cartridge in these short cases is 186 gr, flat nose bullet, 42.2 grs of Bl-c2. (Reference: Page 932 of the (Handloader's Manual Of Cartridge Conversion) by John J. Donnelly"

m4220

http://www.municion.org/9_3x72r/9_3x72rSS.gif

This may help.

Check this thread, lots of good info:

http://www.doublegunshop.com/f...Number=242341&page=3

The Standard 72R and the Sauer 72R have little in common, as far as case dimensions go. Maybe the length.