well maybe the nitro is the only load for the 500' s because i shoot a 500 but not hte nitros (yet) and at 35yds i feel good if i get 10 -15 pellets in the kill zone. i have tried the undertaker choke and currently have the stardot choke rom walmart. it does better than any of the other ones i tried. how do those nitros shoot through a standard choke like that. i mean one that is not put out by say mossberg? same result? by the way when sitting on the ground and shootin a few rounds of my winchester #6 hv' s i get put on by back every shot. i guess it just takes a man to shoot a mossberg. ha ha