Carlson’s Bismuth Bone Buster 20 Gauge Mid-Range Choke – Invector-Plus

Description

Bismuth has made a big comeback in the duck blind, and for good reason. It's denser than steel, which means it hits harder and holds energy better downrange, and it's soft enough to run through older guns that can't handle steel. The catch is that bismuth patterns best through a tighter constriction than what most factory chokes are set up for. That's exactly the gap this choke tube fills. Carlson's built the Bismuth Bone Buster with a .025 mid-range constriction and a longer internal parallel section than you'll find on a standard factory tube, so your bismuth shot leaves the muzzle in a cleaner, more concentrated column.

What Sets the Bone Buster Apart in the Field

This one is cut for the Browning Invector-Plus 20 gauge and is machined from 17-4 heat-treated stainless steel, so it can take a beating in wet, nasty marsh conditions and keep its shape. Carlson's didn't just design it and ship it either. They ran thousands of load and choke combinations through their pattern testing before settling on the specs, and that legwork shows up on the pattern board. The mid-range tube shines in that 20 to 45 yard window, which covers the majority of realistic decoying shots over water or in the timber.

Loads This Mid-Range Bone Buster Handles

While it's dialed in for bismuth, this choke isn't a one-trick pony. The mid-range version is rated for all steel shot as well as lead and Hevi-Shot loads, so you can swap ammo depending on the hunt without swapping tubes. Do keep slugs, sabots, and rifled slugs out of it, since those aren't meant for this choke.

Backed for the Long Haul

Carlson's has been building choke tubes in the USA for over three decades, and every tube they make carries a lifetime warranty. If something ever happens to it, you send it back and they take care of you. Thread it in, pattern a few boxes to see how your gun and ammo like it, and get after them.