None of it has anything to do with the FA.
You're far more likely to run into a CO than a cop. CO's seem to come out of the trees. Good guys just doing their job.
As long as you're obviously shooting targets in a safe place(good back stop and knowing exactly what is behind it out to several klicks) you're fine.
Just remember that there are hordes of assorted riff-raff using Crown Land too. Any of it remotely close to Etobicoke(grew up near Burnhamthorpe and Martingrove) will be infested with hikers, picnickers and cross country skiers in winter.