I did some patterning a couple of days ago...wind chill below Zero and very windy. I tried 3 different chokes and 3 different loads at 40 yards.

My best 10" group using #5's was 117 at 40 yards with Winchester Suprene 3" 1 3/4 oz. with my Browning A-bolt and factory choke.

I also tested Primos & Tru-glo chokes with Heavy shot & Fedral both 2 oz.

I with will do some more testing when it is less windy and a little warmer.