Quick Answer
The 7mm PRC and .280 Ackley are both versatile cartridges suitable for elk hunting, offering a balance of power and trajectory. The 7mm PRC tends to have a flatter trajectory and more consistent performance across various ranges, while the .280 Ackley has a reputation for delivering higher velocity and energy at longer ranges.
Ballistic Performance
When it comes to elk hunting, a flat trajectory and consistent performance are crucial. The 7mm PRC has a flatter trajectory, thanks to its 56-degree shoulder angle and a BC of around 0.55 for the 140-grain bullet. This makes it an excellent choice for longer shots, particularly in mountainous terrain. For example, at 500 yards, the 7mm PRC drops only 18 inches, whereas the .280 Ackley drops around 25 inches.
Energy and Range
While the .280 Ackley has a reputation for delivering higher velocity and energy at longer ranges, the difference is not as significant as one might expect. At 500 yards, the 7mm PRC still delivers around 1,200 ft-lbs of energy, which is more than enough to take down an elk. The .280 Ackley, on the other hand, delivers around 1,300 ft-lbs, but the difference is not as substantial as the velocity difference might suggest.
Practical Considerations
When deciding between the 7mm PRC and .280 Ackley for elk hunting, practical considerations come into play. The 7mm PRC is a more popular and widely available cartridge, making it easier to find ammunition and hunting supplies. Additionally, the 7mm PRC is often chambered in high-quality rifles, which can help to optimize performance and accuracy.
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