You don't need a big bore to bring down WA bears. Of the 8 I have killed none ran further than 50 yards and most were around <40 yards. But I don't shoot long range and I make dang sure I blow out both lungs. I don't try and break down their shoulders or any of that stuff. Shot right behind the front shoulder and at a good angle and you'll have a dead bear inside of 50 yards. Only one bear of the 8 was not shot behind the shoulder and that one was shot between the eyes at around 10 yards, he travelled straight down. I think some guys have problems putting bears down because they shoot way out of their own effective range and they don't take good shots. You take out both lungs and they will not travel far at all. .30-.30, .308 .270, .30-06, plenty of gun for Washington state black bears.