I use the standard chokes that come with the shotgun. And nine out of ten times it is IC. I have a dedicated turkey gun that has an extended choke that will throw a tight pattern of Heavy Shot out to 40 yards. Every gun is different so the best thing to do is spend an afternoon patterning your gun at 30 yards with the load you use the most with the chokes you have. Some IC chokes will throw a M pattern and vice-versa regardless of brand or price. Most shotguns will throw a pattern that is not at the POI. It may be up, down, left or right. I shoot a lot of steel which tends to pattern tighter than lead so an IC choke loaded with No. 2 steel will be close to a M choke with lead. This was a bit interesting. One of the guys brought a case of BOSS shells for everyone to try out one morning and they worked quite well. This was a morning hunt in Kansas last season using a IC choke at 30-40 yards with BOSS brand 2 3/4" 1 1/4 oz. No. 5 tungsten. They shot tight groups with an IC choke so you never know until you knock things down consistently or punch itty bitty holes in paper.
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