Description
Bismuth has quietly become one of the best non-toxic options in the marsh, and Carlson's designed the Bismuth Bone Buster specifically to get the most out of it. This is the 12 gauge Extended Range tube built for Benelli Crio and Crio Plus shotguns, machined to a .040 constriction and a .690 diameter. If you have been shooting bismuth through a factory choke and getting patterns with gaps, this is the fix.
What Makes the Bone Buster Different
The secret here is the longer internal parallel section. Factory chokes usually rush the transition, but Carlson's stretches out that parallel area so the shot column settles down before it leaves the muzzle. The result is a more uniform, denser pattern with fewer flyers. Carlson's has spent decades patterning tens of thousands of shells and dialing in the geometry, and that testing shows up downrange with bismuth loads.
Built for the Marsh
The tube is CNC precision machined from 17-4 heat treated stainless steel and finished in a non-reflective matte black that shrugs off the wet, muddy abuse that comes with waterfowl season. It threads right into any Benelli Crio or Crio Plus barrel. Beyond bismuth, this choke also handles lead and Hevi-Shot loads, and it will run steel shot no larger than #2.
Where the Extended Range Choke Shines
The Extended Range constriction is meant for reaching out. Think 40 to 60 yard shots, pass-shooting geese, or late-season birds that hang high and stay wary. If most of your shooting happens over decoys inside 30 yards, the Mid Range version might spread things out a touch more, but for hunters who want to stretch their effective range with bismuth, this is the tube. Carlson's makes it in the USA and backs it with a lifetime warranty, so a season of hard use in the blind is no worry.
Key Specifications
- Manufacturer: Carlson's Choke Tubes
- Manufacturer Part Number: 09203
- UPC: 723189092030
- Gauge: 12 Gauge
- Choke System: Benelli Crio / Crio Plus
- Choke Type: Extended Range
- Constriction: .040"
- Exit Diameter: .690"
- Material: 17-4 Heat Treated Stainless Steel
- Finish: Matte Black
- Style: Extended (Knurled)
- Effective Range: 40 to 60 Yards
- Shot Compatibility: Bismuth, Lead, Hevi-Shot, Steel No Larger Than #2
- Made In: USA
- Warranty: Lifetime
What’s Included
- One Carlson's Bismuth Bone Buster Extended Range choke tube
- Choke wrench
Frequently Asked Questions
What shot can I run through the Bismuth Bone Buster choke?
It is built around bismuth loads, which is where it patterns best. You can also shoot lead and Hevi-Shot through it with no trouble. Steel is fine too, just keep it to #2 or smaller through this Extended Range constriction.
Will this choke fit my Benelli?
This tube is cut for the Benelli Crio and Crio Plus threading, so it drops right into those barrels. If your Benelli uses the older Mobil system instead of Crio, you would need a different model. When in doubt, check your barrel or owner's manual for the choke system.
What is the difference between Extended Range and Mid Range Bone Buster chokes?
The Extended Range tube has a tighter .040 constriction meant for longer shots, roughly 40 to 60 yards. The Mid Range version opens things up a bit and is aimed more at the 20 to 45 yard window. If you spend most of your time reaching for high birds or pass-shooting, Extended Range is the one.
Why choose the Bone Buster over the factory choke that came with my gun?
The Bone Buster uses a longer internal parallel section than most factory tubes, which helps the shot column stabilize and produces a denser, more even pattern with bismuth. Carlson's also builds these from 17-4 stainless for durability and backs them with a lifetime warranty. For a hunter serious about bismuth performance, it is a noticeable upgrade at the pattern board.





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