Had an idea. I finished a big batch of .45 ACP with Titegroup on a Dillon 550. Mostly went smooth, except for interruptions due to small-primer cases. When done, I had that nagging feeling that I might have double charged or skipped a case. I’ve never had a problem, but still, you gotta be sure.
So, I weighed all the finished cartridges. Most of the loads came in between 322 and 324g. But a couple were as low as 318 and an high as 331. So I took out the ‘lows’ and ‘highs’, and sorted them by headstamp - and they lined up really well. Starline were consistently light, PMC were always heavier. Winchesters were all over the place. Out of 750 rounds, I took about 15 that didn’t ‘fit the profile’ and pulled them, just to make sure.