hmmm maybe im doing things wrong....but my 35 whelen brass i fired that was trimmed to length after i took it outta the bag, is longer after being fired than it was when i got it new...i trimmed a few 1x fired cases to use as fliers before i started shooting my groups and i trimmed more off the cases than i did when they were new...didnt measure them and the trimmer is still setup...

im about as new as they come to reloading and figured that you always trim your cases to that size....if nothin else, mine will be consistant i guess..but maybe im doin things wrong?