I could give a flip about pretty cases as long as they are clean. But why toss Hornady cases? I bought 2 packages of 200 count Hornady 38 Special brass and now you have me worried.If you want pretty 38 where the cannelure shows the same amiunt of "daylight" across the batch of mixed headstamp, you have to trim AND throw away Hornady cases. There is no way around that if that is your goal. I trim 38 but I can't sell a box where it looks like the cannelure wanders, even though it doesn't.
If you just want functional ammo and dont care if the cannelure looks like it is wandering then a big middle finger to trimming and move on to other things.