Comparing The Big Bores
Firearms Used
Caliber Gun Weight Bullet Weight Velocity Muzzle Energy Recoil ft. lbs. Recoil ft. sec. Taylor Index
416 Rigby 10.1 lbs. 400 grains 2400 fps 5115 ft. lbs 57.5 18.8 57.1
450 Ackley 10.75 lbs. 500 grains 2150 fps 5130 ft. lbs 60.4 19.3 70.3
450 Ackley 10.75 lbs. 500 grains 2380 fps 6288 ft. lbs 74.8 21.4 77.9
470 Mbogo 10.25 lbs. 500 grains 2150 fps 5130 ft lbs 64.7 20.2 72.9
470 Mbogo 10.25 lbs. 500 grains 2500 fps 6938 ft. lbs 89.6 23.7 84.8
500 Jeffery 10.6 lbs. 525 grains 2400 fps 6713 ft. lbs 88.4 23.2 91.8
505 Gibbs 10.6 lbs 525 grains 2300 fps 6166 ft. lbs 81.1 22.2 88.0
500 A-Square 10.6 lbs. 600 grains 2150 fps 6157 ft. lbs 87.8 23.1 94.0
500 A-Square 10.6 lbs. 600 grains 2400 fps 7673 ft. lbs 109.3 25.8 104.9

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