My thoughts as it pertains to new reloaders is; flare as much as you need to seat bullets cleanly. Remove the flare with a taper crimp die after bullet is seated. Don't worry about case life for now, get the flaring/seating/deflaring down first. 45 ACP brass is still available so if your "over working" the brass reduces the case life, so? How much will the case life be reduced? five reloads? Ten reloads? Worry about numbers later, for now concentrate on loading...
My Anchor is holding fast!