negative. you can own one but it's a gross misdemeanor to fire one. besides,
you're much closer to OR than I and no doubt will have many opportunities to
fire there as well. Cans do not require BATF permission to cross state lines (in
this case, into OR).
http://www.atg.wa.gov/opinions/1988/..._1988_016.html
prohibited from firing is not enough to bypass purchases, i opine. these may
one day be grandfathered and made verboton. i've shot mine when on outings
with local Class 2s ... which allows me to ride their coat tails a bit those days.