6.5×55 Swedish Mauser Ballistics

The 6.5×55 Swedish Mauser is a classic cartridge developed in 1894 as a joint effort between Sweden and Norway for their military rifles. It was designed to provide accurate, long-range performance with mild recoil, making it suitable for infantry use. Over time, it has become a favorite among hunters and target shooters, particularly in Scandinavia, for its versatility on medium game like deer and moose. This article focuses specifically on ballistics, analyzing both external and wound ballistics to offer reloaders and hunters a clear understanding of its capabilities. For more on the cartridge history and specs, visit our 6.5×55 Swedish Mauser complete guide.

Core External Ballistics

The 6.5×55 Swedish Mauser utilizes bullet weights typically ranging from 120 to 160 grains, with muzzle velocities between 2500 and 2950 feet per second depending on the load. Lighter bullets offer flatter trajectories for varmint or medium-range hunting, while heavier ones provide better energy retention for larger game. Supersonic loads maintain velocity well out to 500 yards, but the cartridge does not commonly feature subsonic options due to its design for standard rifle use. Data sourced from reliable ballistics resources highlights its balanced performance. For deeper insights, check our guide to choosing the right caliber for hunting.

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Bullet Drop to 1000 Yards

These drops, zeroed at 100 yards, show the 140-grain load maintaining the flattest trajectory due to its balanced velocity and BC. Lighter 120-grain bullets perform well to 400 yards but arc more beyond that, while the heavier 156-grain experiences quicker drop, limiting practical use past 600 yards for most hunters. Realistic ranges for ethical deer hunting sit around 300-400 yards with proper shot placement, as drops become pronounced and require precise holdover. Defensive shooting benefits from the mild recoil, allowing quick follow-ups inside 200 yards. For extended charts, explore our 6.5×55 Swedish Mauser ballistics page or related comparisons like 6.5 Creedmoor vs. 260 Remington.

Wind Drift (10 mph Crosswind)

The 140-grain bullets resist wind better thanks to higher BC, showing about 6 inches of drift at 300 yards compared to 8 inches for the 156-grain. Beyond 500 yards, wind reading becomes critical, as drift exceeds 17 inches even for optimal loads, making hits unreliable without adjustments. Practical accuracy for hunting favors calm conditions or compensated shots inside 400 yards. For tips on wind effects, refer to our long-range hunting calibers guide.

Energy Retention

Energy decays steadily, with all loads starting above 2200 ft-lbs but dropping below 1000 ft-lbs by 500-600 yards. The 140-grain Partition retains energy best for ethical harvests, supporting expansion to 400 yards on deer. Heavier bullets lose momentum faster due to lower BC, limiting effective hunting to 300 yards for reliable kills. For more on energy thresholds, see our big game hunting caliber guide.

Wound Ballistics (Expanded Practical Section)

Bullet design plays a crucial role in the 6.5×55 Swedish Mauser’s terminal performance, as its moderate velocities emphasize controlled expansion over raw power. Supersonic loads create hydrostatic shock for fast kills on light to medium game, while heavier bullets prioritize penetration for tougher animals. This section provides practical guidance on how common loads perform in tissue, drawing from gel tests and field reports to help hunters select the right projectile. For detailed gel-testing breakdowns, explore our bullet reviews like the Nosler Partition profile.

Bullet Performance Profiles (5 Most Common Loads)

Nosler Partition

• Type – Dual-core partitioned construction for controlled expansion and deep penetration.
• Behavior – Creates broad, violent wounds with fast organ disruption; retains weight for exits on medium game.
• Use – Ideal for deer, elk, and moose up to 150kg.
• Effective Range – 50-400 yards with wide wounding to 310 yards.
• Short Summary – This bullet maximizes the 6.5×55’s potential for ethical, one-shot kills on versatile game.

More details available in our dedicated bullet profile page.

Hornady SST

• Type – Polymer-tipped with interlock ring for rapid expansion.
• Behavior – Explosive wounding in gel; broad channels but possible jacket separation at close range.
• Use – Suited for small to medium deer and varmints up to 80kg.
• Effective Range – 0-300 yards, with best performance under 200 yards.
• Short Summary – Enhances the cartridge’s wounding for quick drops on lighter game.

More details available in our dedicated bullet profile page.

Lapua Naturalis

• Type – Lead-free copper alloy with valve tip for consistent mushrooming.
• Behavior – Deep penetration with controlled expansion; clean wounds in tissue tests.
• Use – Excellent for eco-conscious hunting of deer and larger game.
• Effective Range – 50-350 yards, maintaining integrity at moderate velocities.
• Short Summary – A premium choice for reliable terminal effects without lead.

More details available in our dedicated bullet profile page.

Sierra GameKing

• Type – Boat-tail soft-point for balanced expansion.
• Behavior – Frangible with wide wounds; fragments on impact for explosive effects.
• Use – Best for light-bodied game like varmints or deer up to 80kg on broadside shots.
• Effective Range – 100-300 yards, with reduced penetration at close range.
• Short Summary – Offers versatile hunting performance at an affordable price.

More details available in our dedicated bullet profile page.

Barnes TTSX

• Type – All-copper tipped expanding with grooves for reduced pressure.
• Behavior – 100% weight retention; fierce wounding with broad channels in gel.
• Use – Optimal for elk and tough game requiring deep penetration.
• Effective Range – 0-400 yards, effective on bone hits.
• Short Summary – Delivers consistent, lead-free performance for ethical harvests.

More details available in our dedicated bullet profile page.

Practical Summary

For predators and varmints, lighter bullets like the Hornady SST in 120-140 grains excel with explosive expansion inside 300 yards. On hogs and deer, opt for the Nosler Partition or Barnes TTSX for reliable penetration and energy transfer up to 400 yards. The 6.5×55 lacks dedicated subsonic loads, but suppressed use with standard ammo benefits from its mild recoil. Range discipline is essential, as drops and wind drift amplify beyond 500 yards, demanding precise calculations. Bullet choice defines terminal results more than velocity in this cartridge, prioritizing designs that match game size for clean kills. To dive deeper, read our varmint hunting caliber guide or explore individual reviews.

Encourage readers to explore related articles for deeper analysis, such as our Hornady ELD-X bullet review, Nosler AccuBond profile, or Sierra Tipped GameKing breakdown.