Carlson's precision-engineered choke tube optimized for Bismuth ammunition. 17-4 stainless steel construction with extended parallel section delivers dense, devastating patterns in 20 gauge Browning Invector Plus shotguns.
Fits: Browning Invector Plus
The Bismuth Bone Buster choke tube represents a significant departure from conventional factory choke designs. Carlson's engineers recognized that Bismuth ammunition—with its unique ballistic characteristics—demands a specialized approach to achieve optimal pattern density and consistency.
17-4 Heat-Treated Stainless Steel: This premium material resists corrosion and maintains dimensional integrity through thousands of rounds.
Extended Parallel Section: The longer parallel bore section inside the choke tube is the key to the Bone Buster's effectiveness. This design feature, refined through extensive field testing with various Bismuth loads, produces tighter, more consistent patterns than standard factory tubes.
While engineered specifically for Bismuth loads, the Bone Buster performs admirably with:
This Mid-Range choke tube is classified for all steel shot applications, making it a practical choice for waterfowl hunters who may alternate between ammunition types.
If you're committed to Bismuth ammunition for its performance and environmental benefits, the Carlson's Bismuth Bone Buster delivers the specialized engineering your shotgun deserves. Precision CNC machining combined with real-world testing ensures you'll experience the dense, bone-crushing patterns this choke tube promises.