You can use another choke and get good results if not better. What the Nitro folks have done though is test the Rhino chokes in various guns and found what works best with each. With that said, even if you follow their recommendations, every gun is different and the Nitro recommendation may not be the best for your gun. If you want to try something different, you may want to start with a choke that has the same constriction as the Rhino choke that Nitro recommends for you gun.