Raimey,
It would be better if one of the cartridges were outside the trap,but I'll give it a try. The cases have 30-06 military headstamps and I have a couple samples of 9.3x72R &8x72R cases that have been redrawn from 06 cases. Of the two choices above,I would lean toward 9.3x72R. I suspose it could also be 9x58 1/2R or 9.3x57R/360 but neither of these are as likely as the longer case.9x57R is unlikely because the cases are rimmed and swaging them to get a rim would leave the head dia.too small.
Mike