Quick Answer
Moose penetration is significantly affected by bullet construction, with bullets featuring a harder, more dense core penetrating deeper into the moose's body than those with a softer core.
Bullet Material and Hardness
When hunting moose with a 9.3x62 rifle, the choice of bullet material and hardness plays a crucial role in penetration. A bullet with a hardness of at least 55-60 HRC (Rockwell Hardness Scale) is generally considered sufficient for deep penetration in large game like moose. Examples of suitable materials include the 9.3x62 Norma Oryx, which features a 300-grain, 55 HRC, copper-plated bullet, and the 9.3x62 Lapua Scenar, which features a 280-grain, 60 HRC, copper-clad bullet.
Bullet Design and Expansion
The design and expansion characteristics of the bullet also have a significant impact on penetration. Bullets with a flat or rounded nose design tend to expand more quickly and deeply in soft tissue, resulting in deeper penetration. A bullet with an expansion ratio of at least 1.5:1 (e.g., expanding from 8 mm to 12 mm in diameter) is generally considered sufficient for deep penetration in moose. In contrast, bullets with a pointed nose design may be more prone to tumbling or fragmenting in high-velocity impacts, which can reduce penetration.
Optimal Load and Velocity
To achieve optimal penetration with a 9.3x62 rifle, it is essential to select a suitable load and velocity. A load with a bullet velocity of at least 2,700 fps (820 m/s) is generally considered sufficient for deep penetration in moose. However, excessive velocity (e.g., over 3,000 fps) can result in over-penetration or fragmentation, which can reduce penetration. Additionally, a load with a suitable powder-to-bullet ratio (e.g., a ratio of 1.2-1.5 grains of powder per grain of bullet weight) is also essential for achieving optimal penetration.
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