One other little thing, here's the order I do things in, which may have some bearing on why it's so time-consuming m

starting with tumbled & cleaned brass, sorted by headstamp.
1) lay out brass, spray one-shot lube on cases and in case-mouths. then wipe on Imperial sizing wax lube on the cases once the one-shot dries. Don't really need the one-shot but maybe it helps in the case mouths, and I bought several cans of it just before switching to the wax so I use some.
2) deprime and then resize 308 brass. wipe off sizing wax lube with paper towel.
3) check cases with case gauge. In retrospect I think this is what really slows it down. Use steel ruler & the gauge to check if cases are sized too much or not enough. waste time potting around with sizing die moving it up & down trying to find sweet spot where brass is sized just right. (about a 0.005" window apparently, and changing headstamp of brass usually means adjusting the die)
Re-lube and re-size the occasional one that didn't get sized enough and repeat step 3.
4) trim cases with lee case trimmer and power drill. chamfer inside and outside of case necks. Use greenie scrub thing to remove light tarnish from cases that have some tarnish going.
5) use calipers to verify all cases actually got trimmed below the "trim to" length
6) use power drill and primer pocket cleaning tool to clean the primer pockets
7) now, ready to prime & load the cases.
Would you or do you do all of these steps? I only have case gauges for my "U.S." calibers like 308, 30-06, and 223 so those are the only ones I gauge. I thought it was interesting though that simply following the sizing die's instructions does not necessarily produce sized cases that pass the case gauge. If I screw the sizing die down enough so that it's getting stopped by the shellholder, then that seems to be about 0.005" too much sizing and looks like it pushes the shoulder in too far.
Do you think it's necessary to trim 223 brass if you shoot it in a 556-chambered gun? I always have and always do trim my 223/556 brass using the 223 case trimmer thing. One of my friends says that a 556 chamber has that extra leade and that it's not necessary to trim these cases, and he doesn't. I can see how he might be right but i'm a little too concerned about being wrong, to follow suit. it would save a butt-ton of time if I didn't have to trim cases!