Brenneke Tactical Home Defense 12 Ga, 2¾” Slug, 1 oz, 1378 FPS, 5rd Brenneke USA

THD is the perfect cartridge for home defense, and for law enforcement
professionals operating in crowded urban environments.
It offers more than enough stopping power (even against criminals
wearing bulletproof vests), but because the wad is designed not to
separate from the slug, risk to innocent bystanders is reduced. T
he lower recoil allows fast followup shots in case of a multiple-target scenario.
The THD is the best safeguard for you and the ones you love.

5-shot, 1.98 inch group fired at 50 yards from bench:

Even though the THD is a low-recoil cartridge, it has more than enough power
to penetrate barricades encountered in typical urban scenarios such as car doors.
The photo below shows the THD penetrating two 20-gauge steel sheets, as used
in FBI test protocol in order to simulate a car door. This steel is actually thicker
than that used in most modern European and U.S. automobiles:

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Calibre: 12 GA 2 ¾ 
weight: 1 oz, 437 grs, 28,4g
use: law enforcement
barrel: smooth and rifled
chokes: all 
range: CQB up to 35 yards

The low recoil allows quick follow- up shots.