Get out there and kill as many of the feral cats as you can. Tell no one just do it. When your done doing it wake up and do it again.
Take it to your grave.
What's great about Montana is your elk license is good for Archery as well as rifle. Hunt as time permits with your bow and if your don't connect pick up your rifle and continue the quest.
As I like to say here back east nothing is more dangerous in the woods than a bow hunter with a rifle in...