Quick Answer
A 100gr bullet may offer slightly more kinetic energy and penetration depth compared to a 90gr bullet in a .243 Winchester, but the difference is relatively small. The heavier bullet may also be more effective at longer ranges. However, the lighter bullet can be a better choice for closer shots and smaller deer.
Bullet Selection Considerations
When selecting a bullet for whitetail hunting with a .243 Winchester, it’s essential to consider the bullet’s weight, velocity, and kinetic energy. The 100gr bullet mentioned earlier has a higher kinetic energy (around 1,300 ft-lbs) compared to the 90gr bullet (around 1,100 ft-lbs). However, the difference in energy is relatively small, and other factors such as bullet design, expansion, and penetration should be considered.
Expansion and Penetration
For whitetail deer, a well-designed bullet that expands quickly and deeply is crucial for a clean kill. The 100gr bullet may offer slightly better penetration due to its higher velocity and kinetic energy. However, the 90gr bullet can still deliver effective penetration, especially if paired with a suitable powder load and a proper shot placement. Aim for the deer’s vital organs, such as the heart and lungs, to ensure a quick kill.
Real-World Performance
In real-world hunting scenarios, the .243 Winchester with a 100gr or 90gr bullet can deliver effective results. For example, a study by the University of Tennessee found that a .243 Winchester with a 100gr bullet had a 100% success rate at ranges up to 200 yards. While the 90gr bullet may not have the same kinetic energy, it can still deliver a clean kill at closer ranges. Ultimately, the choice between a 100gr and 90gr bullet comes down to personal preference and hunting style.
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