No
Short answer: Never. Ammunition can't go in the trash or a dumpster.
King County, WA says ammunition can't go in the garbage and isn't accepted at its HHW sites, and directs people to the local non-emergency police line. Dumpsters.com prohibits reactive waste. Some programs, such as Oregon Metro, do accept ammunition at HHW.
Call your local police non-emergency line. Some ranges or HHW programs accept it.
Checked October 2026. Rules change; your hauler's prohibited-items list is the final word.