Product DescriptionCarlson's Bismuth Bone Buster Extended Range choke tube is engineered to deliver dense, consistent patterns with bismuth shotshells. Precision CNC machined from 17-4 heat-treated stainless steel, it features a longer parallel section inside the choke than many factory tubes for improved pattern performance. Extensively tested across a variety of loads, this 20-gauge choke provides devastating pattern density with bismuth and is also compatible with lead, Hevi-Shot, and tungsten super shot (TSS). The Extended Range model can be used with steel shot up to size #2. Designed to fit most Winchester, Browning Invector, Mossberg 500, Weatherby, and Savage shotguns, it's a dependable upgrade for hunters seeking superior downrange performance.Product HighlightsOptimized for bismuth shotshells to deliver bone-crushing, dense patterns17-4 heat-treated stainless steel construction with a longer parallel sectionExtended Range performance; safe with steel shot up to #2Compatible with lead, Hevi-Shot, and TSS loads for versatile useFits most Winchester, Browning Invector, Mossberg 500, Weatherby, and Savage 20-gauge shotgunsSpecsGauge: 20 GaugeChoke Type: Extended RangeMaterial: 17-4 heat-treated stainless steelCompatibility: Fits most Winchester, Browning Invector, Mossberg Model 500, Weatherby, and Savage shotgunsShot Types: Bismuth; Lead; Hevi-Shot; TSS; Steel (not larger than #2)UPC: 723189092252Manufacturer Part Number: 09225Brand: Carlson's Choke TubesDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.