Looking to trim .223 and maybe some handgun brass if it ever needs it.
case trimmer:
3 in 1
"The cutter feature super sharp carbide blades that chamfer both the inside and outside of the case neck while it is being trimmed to the desired length at the same time.
Chamfer on the outside of the case neck is 30 Degrees
Chamfer on the inside of the case neck is 14 Degrees"
RCBS makes one too:
case trimmer:
3 in 1
"The cutter feature super sharp carbide blades that chamfer both the inside and outside of the case neck while it is being trimmed to the desired length at the same time.
Chamfer on the outside of the case neck is 30 Degrees
Chamfer on the inside of the case neck is 14 Degrees"
RCBS makes one too:

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