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Carlson's built the Bismuth Bone Buster around a simple idea: bismuth shot patterns differently than lead or steel, so it deserves a choke tuned specifically for it. This is the extended range version with a .040 constriction, which is where you want to be when the shots stretch out and you need every pellet doing its job. It threads into Remington Rem Choke 20 gauge barrels, so if you're running a current production pump or semi-auto in that platform, it should drop right in.
The tube is CNC machined from 17-4 heat-treated stainless steel, so it holds up to hard use and repeated cleanings without complaint. The real story is inside the tube. Carlson's uses a longer parallel section than most factory chokes, which gives the shot column more time to settle before it leaves the muzzle. That translates to more consistent, denser patterns down range, and with bismuth loads specifically it means fewer flyers and a more even spread on target.
The extended range .040 tube is designed to do its best work roughly in that 40 to 60 yard window, so it's the call for pass shooting ducks, geese skirting the spread, or any day when birds are playing it cautious. If most of your shots land inside 40 yards over decoys, the mid range .025 tube is often the friendlier choice, but for reaching out this one earns its keep. It handles all bismuth, lead, and Hevi-Shot loads, and you can run steel through it too, just keep steel no larger than #2.
The end of the tube is knurled so you can grab and swap it without fighting a wrench in cold weather, and the extended design also gives the muzzle a little protection when you lean your gun in the blind. Skip slugs and sabots in this one. Carlson's makes these right here in the USA and backs them with a lifetime warranty, which tells you they stand behind the patterning work that went into it.
This tube is cut for the Remington Rem Choke thread pattern in 20 gauge. Current production Remington pumps and semi-autos generally use this thread, so it should thread right into your barrel. If you're unsure, check the marking on your existing choke or the top of the barrel to confirm you have a Rem Choke barrel.
The extended range tube has a tighter .040 constriction and is built for longer shots in the 40 to 60 yard range, making it ideal for pass shooting and wary birds. The mid range tube runs a .025 constriction and shines closer in, roughly 20 to 45 yards over decoys. Many hunters keep both on hand and pick based on how the birds are working that day.
Yes, but with limits on this extended range tube. Carlson's says to keep steel shot no larger than #2 through the .040 constriction. It also handles all bismuth, lead, and Hevi-Shot loads without restriction, and slugs or sabots should never be used in it.
Bismuth is denser than steel but softer than tungsten, so it patterns differently through the choke. Carlson's tuned the parallel section and constriction of the Bone Buster specifically around bismuth loads to squeeze out tighter, more even patterns. If you're shooting bismuth regularly, a dedicated tube like this can noticeably clean up your patterns compared to a general purpose choke.
| UPC | 723189092238 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 09223 |
| Caliber/Gauge | 20 Gauge |
| Chokes Included | One Choke |
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