.500 Bushwhacker

The .500 Bushwhacker is a .50 caliber semi-rimmed revolver cartridge developed by TII Armory for the Magnum Research BFR revolvers. It is currently the most powerful revolver cartridge in the world, offering a similar level of ballistic performance to African stopping rifles, such as the .416 Rigby and .470 Nitro Express. Given comparable barrel lengths, it is nearly twice as powerful as the .500 S&W Magnum. A 10-inch barrel revolver chambered in the cartridge is capable of penetrating 96-inches of 10% Clear Ballistics gel.

.500 Bushwhacker
Comparison of the .500 Bushwhacker (L) to the .500 S&W cartridge (R)
TypeHandgun
Place of originUnited States
Production history
DesignerJames Tow and Keith Tow
Designed2021
ManufacturerTII Armory
Produced2022–present
Specifications
Parent case.375 Ruger
Case typeSemi-rimmed, straight
Bullet diameter.500 in (12.7 mm)
Neck diameter.525 in (13.3 mm)
Base diameter.530 in (13.5 mm)
Rim diameter.560 in (14.2 mm)
Rim thickness.059 in (1.5 mm)
Case length2.45 in (62 mm)
Overall length2.95 in (75 mm)
Rifling twist1 in 15 in (380 mm)
Primer typeLarge rifle
Ballistic performance
Bullet mass/type Velocity Energy
275 gr (18 g) TII Barnes XPB 2,600 ft/s (790 m/s) 4,127 ft⋅lbf (5,595 J)
310 gr (20 g) TII Bengal WFNGC 2,550 ft/s (780 m/s) 4,476 ft⋅lbf (6,069 J)
340 gr (22 g) TII CEB Handgun Raptor 2,500 ft/s (760 m/s) 4,718 ft⋅lbf (6,397 J)
400 gr (26 g) TII Bengal WLFNGC 2,350 ft/s (720 m/s) 4,905 ft⋅lbf (6,650 J)
510 gr (33 g) TII Bengal WFNGC 2,141 ft/s (653 m/s) 5,191 ft⋅lbf (7,038 J)
Test barrel length: 10 in
Source(s): TII Armory (275 gr), (310 gr), (340 gr) (400 gr), (510 gr),
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