.244 H&H Mag. Load Data & Reloading Guide

Rifle

Also known as: .244 Holland & Holland Magnum, 6mm H&H Magnum, .244 H&H

About .244 H&H Mag.

The .244 H&H Magnum, developed by the renowned Holland & Holland in the mid-20th century, sought to expand the versatility of magnum cartridges in hunting. Designed for high velocity and flat trajectories, this caliber was conceived to compete with other high-performance cartridges in the North American and African hunting markets. Although it never gained the commercial popularity of the more ubiquitous .300 H&H Magnum or .7mm Magnum, it remains a niche choice among enthusiasts who appreciate its unique characteristics.

Technically, the .244 H&H Magnum features a belted case design, typical of H&H cartridges, providing reliable headspacing and increased strength. It utilizes a caliber diameter of .244 inches, now more commonly referred to as 6mm. The lengthened case accommodates a substantial powder charge, allowing for higher velocities compared to similar calibers. Historically, bullet weights range from 75 to 100 grains, with the potential to push these projectiles to velocities exceeding 3400 feet per second, depending on the specific powder and load used.

For reloaders, the .244 H&H Magnum offers clear advantages. The cartridge's ample case capacity allows for experimentation with different propellants, tailoring loads for specific applications such as varmint hunting or medium game. Despite its scarcity in factory ammunition, handloaders can take full advantage of modern powders and bullet designs to maximize its performance. Practically, this cartridge is suitable for long-range shooting due to its speed and flat trajectory, particularly appealing for competitive target shooting or precision hunting scenarios.

Overall, the .244 H&H Magnum delivers a niche yet valuable option for specialized purposes. Its high-velocity performance combined with a wide range of projectiles makes it an intriguing choice for those interested in reloading unique and effective rounds. Despite its historical overshadowing by larger calibers, its capabilities in terms of precision and customization hold lasting appeal.

Technical Drawing

.244 H&H Mag. cartridge dimensions, C.I.P.L1 = 59.18 mm, L2 = 63.87 mm, L3 = 70.87 mm, L6 = 91.44 mmL1 = 59.18 mmL2 = 63.87 mmL3 = 70.87 mmL6 = 91.44 mm50.0°

Based on C.I.P., the max. allowed case length is 2.790 in / 70.87 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 63,092 PSI / 4,350 bar.

Technical Specifications

Maximum Pressure:63092 PSI / 4350 bar
Case Volume:83 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Safety Standard:C.I.P. (Datasheet)
Bore Area:28.46 mm²
Barrel Diameter:0.245" / 6.2 mm
L1:2.330" / 59.18 mm
L2:2.515" / 63.87 mm
L3:2.790" / 70.87 mm
L6:3.600" / 91.44 mm

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Standard Load Data — .244 H&H Mag.

Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.

All
55 gr
65 gr
75 gr
77 gr
79 gr
80 gr
85 gr
87 gr
90 gr
96 gr
100 gr
104 gr
105 gr
108 gr
109 gr

Frequently Asked Questions

The maximum pressure for .244 H&H Mag. is 63,092 psi | 4,350 bar.

.244 H&H Mag. typically uses a Large Rifle Magnum (LRM) primer.

The case capacity of .244 H&H Mag. is approximately 83 grains of water (H₂O).