I have been looking into turkey chokes for my SBE.
Go to www.nitrocompany.com. They have some super chokes and ammo that would be great for coyotes. Just search for your gun and it will tell you choke and ammo you need. I saw for me SBE they have a choke and shooting their 00 bucks that will put all 18 pellets in a 22" circle @ 60 yards.