I go threw alot of .223 brass for matches and need to cut my time down on preping brass as it can take alot of time.
I use a giraud case trimmer. it trims,chamfers the inside and out side all in one quick process and very quickly.
I opened a new bag of 100 ww brass which is case hard when new and a bear to trim and popped a tv diner in the micro wave at the same time I started on the brass and was done with the brass 1 minute after the timer went off on the microwave.
now I buy brass in two different ways 600 yard ammo and rattle battle ammo gets new ww brass to start the year and 200 and 300 yard and practice ammo gets once fired brass from rvo, I buy the ww in lots of 500 or 1,000 and the rvo in lots of 3,500.
I use a rcbs case prep center for the flash hole and primer pocket right now as its ok quick but its done after it goes threw the trimmer. and all brass new or used get run threw the sizer to get the neck case tension perfect.
I think I will go down and run another couple hundred threw the trimmer before I turn in. taking it to work and loaning it to a friend to try out as he has about 850 out of 1,000 rounds he wants to do. I told him it would take about 3 hours to trim and chamfer them. but the machine was $346 also.