yes... serious violations such as rape, murder, theft, etc. certainly come to mind... poaching a few deer doesn't imho... i'd say that ~my~ criteria would basically stipulate any egregious violations against other people... victimless crimes? not so much...
Poaching is NOT a victimless crime. ALL of us as hunters pay for it, in public sentiment if nothing else. I stand by my first response. I'd talk to that friend and find out why he did it and make him promise not to do it again. If he kept on doing it, I'd turn him in with no remorse and break all ties with him.
And to answer someone's question from back there a few pages, I've turned in 'friends' twicebefore.