Larry, et all
Not a spert...
303 Brit in a Krag..
The 30-40 is just a tad different in the shoulder than the 303 Brit, so it can not be fire formed in a Krag, but you can move the shoulder by using a 30-40 case forming die.
Link to disscussion..
http://forums.thecmp.org/archive/ind.../t-151601.html
OR,, re-barrel to ?? The 7mm mauser & 7.62x51 rim to small, 30.06 may not cycle in the Krag ??cartridge holder??