Carlsons CORE Win Choke Features The Carlsons CORE Series choke tube uses a mid-range modified constriction that is effective from roughly 20 to 35 yards with lead loads and 25 to 45 yards with steel giving hunters a versatile middle-ground pattern for mixed-range shooting. Because the CORE Series accepts BB through size 10 shot in lead steel bismuth tungsten/TSS and duplex or blended loads one choke can cover dove duck pheasant and goose hunts without swapping tubes between outings. The constriction level is lasered directly onto the choke head so shooters can identify it at a glance in low light. This flexibility makes it a practical choice for hunters who chase multiple species across a single season. Constructed from steel with a black finish the choke is built to withstand repeated cycling of high-volume waterfowl and dove loads without excessive wear. It threads directly into Winchester Win Choke pattern barrels for a factory-fit installation with no gunsmithing required. The included yardage chart printed on the packaging helps take the guesswork out of choke selection for shooters new to pattern testing. Whether heading to a dove field or a sporting clays course this choke tube gives Winchester shotgun owners a reliable easy-to-identify option. Carlsons CORE Winchester Specifications Brand: Carlsons Model: CORE Winchester Compatible Hosts: Winchester Win Choke Universal Shotguns Gauge: 12 GA Constriction: Mid-Range (Modified) Diameter: 0.710 Material: Steel Color: Black Available At: GrabAGun