6.5×50mmSR Arisaka
E326170
The 6.5×50mmSR Arisaka is a semi-rimmed rifle cartridge developed by Japan in the late 19th century and widely used in Arisaka service rifles through World War II.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 6.5×50mmSR Arisaka canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3086134 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: 6.5×50mmSR Arisaka Context triple: [Type 38 rifle, cartridge, 6.5×50mmSR Arisaka]
-
A.
Type 38 rifle
The Type 38 rifle was a bolt-action service rifle of the Imperial Japanese military, known for its reliability, long service life, and use throughout the early 20th century including both World Wars.
-
B.
Carcano rifle
The Carcano rifle is an Italian bolt-action military rifle most widely known as the weapon used by Lee Harvey Oswald in the assassination of U.S. President John F. Kennedy.
-
C.
Mosin–Nagant rifle
The Mosin–Nagant rifle is a bolt-action military rifle developed in the late 19th century that became one of the most widely produced and historically significant service rifles, used extensively by Russian and later Soviet forces in multiple major conflicts.
-
D.
Type 99 rifle
The Type 99 rifle was a World War II-era Japanese bolt-action military rifle known for its robust design, use of 7.7×58mm ammunition, and service as a standard infantry weapon in the later years of the war.
-
E.
Berdan rifle
The Berdan rifle was a 19th-century single-shot bolt-action military rifle that served as a standard infantry weapon of the Imperial Russian Army.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: 6.5×50mmSR Arisaka Target entity description: The 6.5×50mmSR Arisaka is a semi-rimmed rifle cartridge developed by Japan in the late 19th century and widely used in Arisaka service rifles through World War II.
-
A.
Type 38 rifle
The Type 38 rifle was a bolt-action service rifle of the Imperial Japanese military, known for its reliability, long service life, and use throughout the early 20th century including both World Wars.
-
B.
Carcano rifle
The Carcano rifle is an Italian bolt-action military rifle most widely known as the weapon used by Lee Harvey Oswald in the assassination of U.S. President John F. Kennedy.
-
C.
Mosin–Nagant rifle
The Mosin–Nagant rifle is a bolt-action military rifle developed in the late 19th century that became one of the most widely produced and historically significant service rifles, used extensively by Russian and later Soviet forces in multiple major conflicts.
-
D.
Type 99 rifle
The Type 99 rifle was a World War II-era Japanese bolt-action military rifle known for its robust design, use of 7.7×58mm ammunition, and service as a standard infantry weapon in the later years of the war.
-
E.
Berdan rifle
The Berdan rifle was a 19th-century single-shot bolt-action military rifle that served as a standard infantry weapon of the Imperial Russian Army.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
firearm cartridge
ⓘ
rifle cartridge ⓘ |
| alsoKnownAs |
6.5 Japanese
ⓘ
6.5mm Arisaka ⓘ 6.5×50mm Japanese ⓘ |
| bulletDiameter |
.264 inch
ⓘ
approximately 6.7 mm ⓘ |
| caseLength | approximately 50 mm ⓘ |
| caseType |
bottleneck
ⓘ
semi-rimmed ⓘ |
| collectorInterest | military surplus enthusiasts ⓘ |
| commercialAvailability | limited modern production ⓘ |
| countryOfOrigin | Japan ⓘ |
| designedBy | Japanese Army technical authorities ⓘ |
| designedFor | bolt-action rifles ⓘ |
| developedInPeriod | late 19th century ⓘ |
| natoEquivalent | none ⓘ |
| overallLength | approximately 75 mm ⓘ |
| primaryService | Japanese service rifles ⓘ |
| propellantType | smokeless powder ⓘ |
| replacedBy | 7.7×58mm Arisaka ⓘ |
| serviceEntry |
circa 1897
ⓘ
late 1890s ⓘ |
| serviceRetirement | mid 20th century ⓘ |
| standardBulletWeight |
approximately 139 grains
ⓘ
approximately 140 grains ⓘ |
| typicalMuzzleEnergy |
approximately 1800 ft·lbf
ⓘ
approximately 2400 J ⓘ |
| typicalMuzzleVelocity |
approximately 2500 ft/s
ⓘ
approximately 760 m/s ⓘ |
| usedAs | standard Japanese rifle cartridge ⓘ |
| usedBy |
British Army
ⓘ
Chinese forces ⓘ Imperial Japanese Army ⓘ Imperial Japanese Navy ⓘ Russian Empire ⓘ Russian Ground Forces ⓘ
surface form:
Russian military
United Kingdom ⓘ various Asian militaries ⓘ |
| usedInConflict |
Russo-Japanese War
ⓘ
Sino-Japanese War (1937–1945) ⓘ
surface form:
Second Sino-Japanese War
World War I ⓘ World War II ⓘ |
| usedInFirearm |
Type 30 rifle
ⓘ
Type 38 rifle ⓘ Type 44 carbine ⓘ Type I rifle ⓘ various Arisaka service rifles ⓘ |
| usedInRole |
infantry service cartridge
ⓘ
training ammunition ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: 6.5×50mmSR Arisaka Description of subject: The 6.5×50mmSR Arisaka is a semi-rimmed rifle cartridge developed by Japan in the late 19th century and widely used in Arisaka service rifles through World War II.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.