The .338 Lapua Magnum (often shortened to 338 Lapua) is a powerful, long-range cartridge known for its exceptional accuracy and ballistic performance. Understanding its dimensions and specifications is crucial for anyone considering using this round. This guide delves into the specifics of 338 Lapua ammo size, including case dimensions, bullet weights, and overall cartridge length.
338 Lapua Ammo Dimensions: A Detailed Look
The 338 Lapua Magnum cartridge isn't your typical hunting round. Its larger dimensions directly contribute to its impressive range and energy retention. Let's break down the key dimensions:
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Case Length: Approximately 2.8 inches (72mm). This substantial case capacity allows for a large powder charge, crucial for achieving high velocity.
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Bullet Diameter: .338 inches (8.6mm). This larger diameter contributes to superior ballistic coefficients compared to smaller calibers.
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Overall Cartridge Length: This varies slightly depending on the bullet weight and type, but generally falls between 3.6 to 3.8 inches (90-95mm).
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Neck Diameter: The neck of the cartridge, which holds the bullet, is precisely sized to ensure a secure and consistent fit. Precise measurements for the neck diameter are typically found in reloading manuals, as slight variations can exist between manufacturers.
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Rim Diameter: The diameter of the cartridge rim is specific to the 338 Lapua, and is essential for proper chambering in firearms designed for this round.
It's important to note that these are approximate dimensions. Minor variations can occur due to manufacturing tolerances and different bullet types. Always consult the manufacturer's specifications for the specific ammunition you're using.
Bullet Weights and Ballistic Performance
The size of the 338 Lapua cartridge directly impacts its ballistic performance. The larger case capacity allows for the use of heavier bullets, which retain their energy over longer distances. Common bullet weights range from 250 grains to 300 grains, and even heavier bullets are available. Heavier bullets generally exhibit flatter trajectories and less wind drift at long ranges.
The 338 Lapua Magnum's high velocity and substantial bullet weight combine to provide exceptional downrange energy. This makes it a preferred choice for long-range precision shooting, target shooting competitions, and military applications where extreme accuracy and effectiveness are paramount.
Choosing the Right Ammunition
Selecting the right 338 Lapua ammunition requires careful consideration of several factors. These include:
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Bullet Weight: Choose a weight appropriate for your intended purpose. Heavier bullets are better for extreme long-range shooting, while lighter bullets may be suitable for shorter ranges.
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Bullet Construction: Different bullet constructions (e.g., match grade, hunting, etc.) offer varying degrees of accuracy and penetration. Selecting a bullet tailored to your specific needs is vital.
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Manufacturer: Reputable ammunition manufacturers ensure consistent quality and performance.
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Intended Use: Whether you're targeting paper at a long-range shooting competition or engaging game in the field, choosing the appropriate ammunition is crucial for optimal performance and safety.
Safety First: Handling 338 Lapua Magnum
The 338 Lapua Magnum is a powerful cartridge that requires respect and careful handling. Always practice safe gun handling procedures and ensure your firearm is properly maintained. Consult your firearm's manual for specific safety instructions. Improper handling can lead to serious injury or damage.
By understanding the 338 Lapua ammo size and its specifications, along with prioritizing safety, you'll be better equipped to utilize this exceptional cartridge effectively and responsibly. Remember to always consult reputable sources and manufacturer specifications for the most accurate and up-to-date information.
