Quick Answer
A .416 Rigby can be effective against grizzlies, but it's not the most ideal choice due to its relatively low velocity and less-than-ideal expansion characteristics for larger game.
Ballistic Considerations
The .416 Rigby’s 4000 ft-lb of kinetic energy at 100 yards may be sufficient, but its relatively low muzzle velocity of approximately 2200 ft/s and somewhat mediocre expansion make it less desirable for hunting larger bears. For comparison, the .416 Barrett and .416 Weatherby Magnum offer significantly more velocity and kinetic energy. To make the most of the .416 Rigby, use a heavy bullet (400-500 grains) and aim for a high-shoulder or heart shot.
Hunting Techniques
When hunting grizzlies with a .416 Rigby, it’s essential to focus on making a clean, quick shot. This may involve stalking your quarry to within 50 yards or less, then making a precise shot at the bear’s head or neck. Be prepared for the possibility of a second shot, as larger bears can often recover quickly from a non-fatal wound. Additionally, consider the use of a muzzle brake to reduce recoil and increase the shooter’s accuracy.
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