American Hunter.

Finding a rifled choke tube isn’t particularly difficult for most common thread patterns, such as the Remington RemChoke, Benelli Crio Plus, Beretta/Benelli (Mobil), Beretta Optima HP, Browning Invector and Invector Plus, and Winchester Win Choke. At this time, Browning appears to be the only gunmaker that sells them direct to consumer (as accessories); there’s no need to fret, as aftermarket companies, and particularly Carlson’s Choke Tubes, cover those mentioned above and then some. Options in 12 gauge typically outnumber those in 20.

As with choke tubes offering varying degrees of constriction, rifled models are, at times, available in flush-fitting and extended configurations, though the latter are now conventional. I haven’t found one length to outperform the other, but the extra length of an extended model definitely aids the installation and removal process. Given that many slugs—including those featuring a sabot—can be used with fully rifled barrels and rifled choke tubes, it’s unsurprising that the twist rate of both are similar, if not identical. For instance, a 1:35-inch twist rate is commonly employed in 12 gauge.

While there is ammunition that plays nicely with both fully rifled barrels and rifled choke tubes, some is outright incompatible with the latter. When the manufacture states, “Use in fully rifled barrels only,” or something similar, heed their warning. Avoid that load. Unfortunately, such cautions are common to the highest-performing—and flattest shooting—slugs, but that’s simply the tradeoff associated with going the rifled-choke-tube route.

Provided there’s no warning, or the ammunition box reads, “Suitable for use in smoothbore and rifled shotguns with any choke,” or an analogous message, that slug is safe for use through your rifled choke tube. Most will be of the traditional, full-diameter, Foster-type design or Brenneke’s improved version, though there are sabot slugs that can be utilized in rifled choke tubes, too. Examples of the latter are Winchester’s Super-X BRI Sabot Slug, a favorite of mine, and Brenneke’s new Topas, which pairs a blue, 12-gauge wad with a Brenneke-style, lead-alloy, 16-gauge slug. That’s only the beginning, too.

I found this to be a very helpful article.  A day or two ago I watched Ron Spomer discuss rifled slugs, and I was a bit confused until I figured out we’re talking about two different things between the article above and Ron – rifled slugs that don’t spin versus rifled chokes that do spin a slug.

Anyway, I’m not a slug shooter so this was a learning experience for me.