Pretty new to the 20 ga. craze, I normally carry a BPS 10 ga. with Nitro's but I have a old 20 ga. 870 express with 26" barrel and a Lohman extended turkey choke (no idea on constriction) that I bought 15 yrs. ago so my younger cousin could go turkey hunting with me. It never impressed me with lead loads but I kept reading about Fed. HW #7s and had to give them a try. I will say I was pleasantly surprised by the pattern, 197 in the 10" at 40 yds.