There is no sense in tossing any brass. Just size it until it works.

I will comments that the 7.65 Mauser has the most messed up set of sizing die standards on the market.
I have 4 brands of dies for the caliber and only one sizer the RCBS is correct.
I ran into a rusty orphan RCBS sizer at a guns show and it too is correct.
Most of the other dies give grossly excessive headspace in the rifles that I own.

I checked my handloaded ammo, Norma factory and Prvi Partizan against a L E Wilson case gauge and they all agree with the case gauge.
None of the cases sized in the non-RCBS sizer dies matched up to the Wilson gauge.