The Somewhat Confusing .45 Colt/.410 Bore Handguns ... Typical .410 shells are between 2.5" to 3" long, before they are crimped, and they launch 0.410" projectiles when loaded with slugs.

A live-fire assessment of a Taurus Judge revolver, chambered for .45 Colt and .410 shotshells, revealed mixed performance and significant issues. -While .410 rounds (Hornady Triple Defense) functioned ...

Of course, the double-barrel pistol is available in .410/.45 Colt, and like the G2 Contender, quick barrel swaps will allow you to shoot a variety of calibers (.22 LR and .22 WMR included) from it.

However, the .45 Colt bullets must travel through 1.70" of the unrifled chamber (needed to accommodate 3" long .410 shells) before engaging the 7.25" long rifled portion of the bore.

Although only briefly in production, the Tennessee-made firearm was able to shoot both .45 Long Colt handgun rounds and .410 shotshells. This unusual combination sparked industry-wide interest.