.25-35 Winchester
| .25-35 Winchester | ||||||||||||||||||||
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| Type | Rifle | |||||||||||||||||||
| Place of origin | United States | |||||||||||||||||||
| Production history | ||||||||||||||||||||
| Designer | Winchester | |||||||||||||||||||
| Designed | 1895 | |||||||||||||||||||
| Manufacturer | Winchester | |||||||||||||||||||
| Produced | 1895–present | |||||||||||||||||||
| Variants | .25-35 Ackley Improved, 6.5×52mmR | |||||||||||||||||||
| Specifications | ||||||||||||||||||||
| Parent case | .30-30 Winchester | |||||||||||||||||||
| Case type | Rimmed, bottlenecked | |||||||||||||||||||
| Bullet diameter | .258 in (6.6 mm) | |||||||||||||||||||
| Neck diameter | .282 in (7.2 mm) | |||||||||||||||||||
| Shoulder diameter | .365 in (9.3 mm) | |||||||||||||||||||
| Base diameter | .422 in (10.7 mm) | |||||||||||||||||||
| Rim diameter | .506 in (12.9 mm) | |||||||||||||||||||
| Rim thickness | .063 in (1.6 mm) | |||||||||||||||||||
| Case length | 2.043 in (51.9 mm) | |||||||||||||||||||
| Overall length | 2.55 in (65 mm) | |||||||||||||||||||
| Rifling twist | 1 in 8 in (200 mm) | |||||||||||||||||||
| Primer type | Large Rifle | |||||||||||||||||||
| Maximum pressure | 44,000 psi (300 MPa) | |||||||||||||||||||
| Ballistic performance | ||||||||||||||||||||
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| Test barrel length: 24" Source(s): Hodgdon | ||||||||||||||||||||
The .25-35 Winchester Center Fire (6.6x51mmR) was introduced in 1895 by Winchester for the Winchester Model 1894. Together with the .30-30 Winchester, it was one of the earliest smokeless cartridges designed in North America for a sporting rifle. Savage adopted it for its Savage Model 99 lever-action rifles. The case was based on the .30-30 cartridge.