I don't know Washington, but max shot size in Idaho for turkeys is BB in lead and T in steel. http://fishandgame.idaho.gov/hunt/rules/turkey/turkey.pdf, top left of page 10. Rolland ps. there are no turkeys in the panhandle, and certainly none in northwestern Montana. OTOH, Montana wants $118 for an out of state turkey tag so maybe I can admit to seeing a few there.