I resize a few different cases off the 30-06 both up and down, since 1964. If it fits and the bolt closes on an empty shell then I load with which ever powder I got the most with for that caliber and shoot them. Accuracy will be the pits, but the shell will confirm to the chamber and you are ready to load for accuracy now.
The only time I will discard a case if I get a crimp, that will not come out, it is from too much case lube. Just remember when sizing down a slow and steady push and pull on the ram arm will result in good cases.
Good luck
Smokeploe