I've got a couple garbage bags full of pistol and rifle empty carboard factory boxes, with the plastic shell holders (pistol typically in 50 and rifle in 20).
Pistol is a mix of 9x19, 9x18, and .40.
Rifle is mostly 3006, 308, and a bunch of similar.
Can meet in the Puyallup or Tacoma area, or even further north or south if you're patient.
LMK if you want some. If there's a lot of interest I can divide them up.