Federal #4 buck, premium in the 3" version is very very good. Remington 3" is in second place. I would not depend on them being as close next time.
Contrary to what the ill informed say on the internet, you want to use a Full choke at a bare minimum, Extra full better, and I use Carlson's turkey chokes. I have been hunting coyotes for 30 years.
Federal makes or used to make 3" Magnum with 1 7/8 oz of BB, they are darn hard to find.
Winchester 3", #4 Buckshot may pattern well in your shotgun, a pattern board tells all, you can use regular newspaper as pattern material taped together. Pattern at 40 yards.
My Carlson patterns 100% in a 20" circle at 40 yards, a tad tighter with 00 and 000 Rem 3" buckshot.
BB and #4 buck is better for coyotes. #2 Lead shot is very effective if you can ever find any left over from the good ole days of shooting geese with it.
Steel shot is NOT the way to go on coyotes, if it all you can find, use a Modified choke with T shot, and aim for their heads.
