Got it.
It is indeed an unconverted 7.5, whoever logged it in had been inhaling too many Hoppe's fumes or something, they had it in the computer as a .308 MAS-36. Double whoops.
Luckily, my buddy was working and we got it figured out. Got it for $200 out the door and a pile of range passes and t-shirts (there was some initial price confusion with the computer mixup, so I got goodies). We initially haggled down to $150, but then he figured out the shop had $200 into the thing and he couldn't complete the transaction without catching hell. It was a wacky deal.
Now I need ammo and extra mags and a capi blanc.
Thanks for the help, all. I'll post photos when I can.