You would have to know many factors to know if 18-23 was a good target. it is a respectable target for sure but what other factors are playing a significant role in the management of that elk population? Sure you could shoot for the moon but then hunting becomes restricted and elk tend to eat themselves out of home when numbers escalate just like most any wild animal. Were they talking 18-23 mature bulls per 100 cows or was it just a male:female ratio? Lots to ponder about when it come to ratios and where a state needs to manage certain populations.