Chuck;
If you look closely at those two sets of dimensions you will see a 9.3x72R reamer virtually will not touch a 9.3x72R Sauer chamber. The Sauer round has the head dia of a .30-06 while the regular 9.3x72R has a head slightly smaller than a .30-30.
Neck dia of the Sauer round is .004 bigger than the regular one. Everything in between is larger on the Sauer case.
Chamber dimensions of the Sauer round are actually much closer to the 9.3x74R round, but it is not loaded to the same intensity.
I do not think it has been established though that this gun has the Sauer chamber, but likely the 9x72R which is based on the regular case, not the Sauer one.
