We are in 340 as well with one bull tag. We haven't heard any bugling and the only thing that has worked so far was a hot estrus call and I got a small 4 to commit and gave my buddy a 20 gd shot which he passed on the first day. I had one other bull hang up then winded us.
Bull tag leaves camp today so now I need to find these dang cows and spikes. Haven't seen any in 6 days of hunting. May head up higher and see what's going on.