Arisaka Type 38 ammunition represents a critical component of Imperial Japanese military history, serving as the standard service cartridge for decades. This guide delivers technical details, historical context, and practical considerations for collectors and enthusiasts.
Designed to support the iconic Arisaka rifle, this ammunition type remains a subject of interest for historians and shooters alike, balancing legacy performance with specific handling requirements.
| Model Designation | Year Introduced | Bullet Diameter | Typical Propellant |
|---|---|---|---|
| Type 38 (6.5×50mmSR) | 1905 | 6.5mm | Semi-smokeless powder |
| Type 99 (7.7×58mmSR) | {"original":"1939"}7.7mm | Improved ball powder | |
| Type 11 (6.5mm) | 1922 | 6.5mm | Semi-smokeless to smokeless |
History of the Arisaka Type 38 Cartridge
The Type 38 cartridge debuted in 1905 and became the primary round for Japanese infantry through multiple conflicts. Its development focused on balancing range, manageable recoil, and reliable feeding in the Arisaka platform.
Military logistics standardized this ammunition across the Imperial Army, creating a common supply chain that influenced training and battlefield tactics for generations.
Technical Specifications
Understanding the technical specifications of the Type 38 round helps clarify its performance envelope and safe handling practices. Key measurements define compatibility with rifles and storage requirements.
Key Specifications
Each specification plays a role in ensuring the ammunition functions correctly and safely within the intended firearm.
| Specification | Metric | Imperial | Notes |
|---|---|---|---|
| Bullet Diameter | 6.70 mm | 0.264 in | Gewehrpatrone match |
| Case Length | 50.7 mm | {"original":"2.0 in"}Rifle chamber dimensions | |
| Overall Length | {"original":"79.9 mm"}3.15 in | Loaded cartridge | |
| 765 m/s | 2,510 ft/s | With 11.2 g bullet |
Reloading Considerations
Reloading Arisaka Type 38 ammunition can be a rewarding pursuit for precision shooters, but it demands attention to detail regarding brass availability and specialized dies.
Because the 6.5×50mmSR case shares parentage with other rounds, handloaders often adapt data carefully while monitoring pressure signs to maintain safety and accuracy.
Collector Market and Value
The collector market for Type 38 ammunition balances historical significance with condition, often driving prices higher for unopened or military-packed lots.
Practical Recommendations
For enthusiasts and collectors, following these recommendations helps preserve equipment and ensure safe handling.
- Inspect brass for cracks or severe oxidation before reloading.
- Use a quality loader specifically designed for 6.5×50mmSR cases.
- Store ammunition in a cool, dry environment to prolong case life.
- Verify firearm markings match the cartridge to avoid dangerous mismatches.
FAQ
Reader questions
Is the Type 38 cartridge safe to fire in original Arisaka rifles today?
Yes, it is generally safe when rifles are in good condition and modern, pressure-rated ammunition is used, but always verify bore condition and chamber integrity before shooting.
What is the typical bullet weight for the Type 38 round?
Typical bullet weights cluster around 11.2 grams, providing a balance between long-range stability and manageable recoil for the platform.
Can modern smokeless powders substitute for the original semi-smokeless propellant?
Many reloaders successfully substitute modern smokeless powders, but they should start with reduced loads and published data to avoid pressure spikes and ensure reliability.
Where can I verify headstamp markings to confirm genuine military Type 38 ammunition?
Cross-reference manufacturer codes and year stamps with reference guides or forums, and consider professional appraisal to authenticate historic military lots.