AS A RULE, buckshot works best in tubes with little, or no choke at all. The reason for this is that the more choke a barrel has, the more the pellets are deformed when they are "scrunched down" to get thru the choke constriction. Deformed pellets fly much more unpredictably than ones that remain round!

That said, the only way to tell for sure what buckshot will do from your chokeis to shoot some of the loads you intend to use at a patterning target to see for yourself what will happen.

Since you are shooting coyotes, this comment does not apply. BUT, to the best of my knowledge, buckshot is illegal for deer hunting in New York, and many other states as well, and for good reason!! Buckshot is a VERY short-range load at best, and more deer have been wounded with buckshot to die later than with any other kind of deer ammo. It is very ineffective, and inhumane!I lived for several years in a county in Virginia where buckshot was the only ammo alowed, and I witnessed so many horrible failures of this ammo that I refused to continue using it, and only hunted in the Blue Ridge counties where rifles were legal. (Can you tell???, I HATE buckshot!!)