I have 2 guns set-up with the Rhino-Nitro combo, An 870 Super-Mag and BPS 10 ga, after several chokes and countless different loads the Nitro's with the Rhino will clean up when it comes to a tight even pattern, IMO if you want the best go with Nitro ammo and Rhino choke, you will have to look long and hard to beat it.