The Carlson’s Bismuth Bone Buster Browning Invector-Plus choke tube is designed to deliver tight, consistent patterns with bismuth ammunition and a range of other non-toxic shot types. CNC precision machined from 17-4 heat-treated stainless steel, it features a longer internal parallel section compared with conventional factory choke tubes. The Extended Range designation permits use with steel shot not larger than 2, and the bore dimensions are optimized for dense leading-edge patterns. This choke is intended for shooters who need reliable, repeatable patterning in field conditions.
Key Specifications
- The material is 17-4 Stainless Steel.
- The caliber/gauge is 12 Gauge.
- The constriction diameter is .040.
- The constriction type is Extended Range.
- The configuration is Browning Invector-Plus.
- The choke is manufactured with CNC precision machining.
- It features a longer parallel section than conventional factory choke tubes.
- Compatible with Bismuth ammunition for optimized patterning.
- Usable with all lead and Hevi-Shot loads.
- The Extended Range spec allows use with steel shot up to 2.
Built for durability and consistent on-target performance, this Carlson’s choke tube provides shooters a practical option for waterfowl and other field applications where non-toxic shot or specific patterning is required. Its robust 17-4 stainless construction and precision internal profile make it a dependable choice for those who prioritize pattern density and long-term reliability.
