I have a vinci, i use a rhino choke, but i have an indian creek in my 20 ga. m2. The indian creek patterns very well in the m2, so i am sure it will do the same in the vinci. I have not shot the Heavy Shot, but i have shot the winchester and it patterns decent. I use nitro ammo, it is amazing, though expensive. If a bird will not come in closer than 60 yards you have a good chance of reaching out and touching him, a real good chance. Although i try not to shoot anything over 45. I hear the heavy 13 patterns close to it. I dont prefer a red dot, but when i get older i am sure i will start using them. I like the burris speed dot because you can still use the sights if something happens and it will not work, such as the battery goes dead. You will enjoy your vinci very much i guarantee.