Big bulls, long shots, tags dang near impossible to get. They are actually called a once in a life time tag as you will more than likely not get more than one in your life. Average draw time is 7 years. Some times more but rarely less. If you draw and are unsucessfull in harvesting, you can begin to reaply in 5 yrs. If you are sucessful in harvesting , you can begin to reaply in 10 yrs.
I know several people who have taken 400+or- bulls with reputable guids. Most guids say to know where your rifle hits out to 600 yrds and be able to effectively use it to that distance.