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.25 Stevens Rimfire
Place of origin United States
Production history
Designed 1898?[1]
Produced 1900-1942
Specifications
Bullet diameter .251 in (6.4 mm)
Neck diameter .276 in (7.0 mm)
Base diameter .276 in (7.0 mm)
Rim diameter .333 in (8.5 mm)
Case length 1.125 in (28.6 mm)
Overall length 1.395 in (35.4 mm)
Primer type rimfire
Ballistic performance
Bullet mass/type Velocity Energy
65 gr (4 g) (smokeless) 1,180 ft/s (360 m/s) 208 ft⋅lbf (282 J)
Source(s): Barnes & Amber 1972
The .25 Stevens was an American rimfire rifle cartridge.[1] To differentiate from the related .25 Stevens Short it is sometimes also referred to as .25 Stevens long.[2]

Developed by J. Stevens Arms & Tool Company and Peters Cartridge Company,[1] it was developed between 1898 and 1900; catalogs suggest it was introduced in 1898, but most sources agree on 1900.[1] It was offered in the Crack Shot #15 rifle, which debuted in 1900.[1] It may also have been available in the Favorite rifle, which was first released in 1894 and discontinued in 1935.[1] It originally used a 10 to 11 gr (0.65 to 0.71 g) black powder charge under a 67 gr (4.3 g) slug; this was later replaced by smokeless.

Some handguns were also chambered for .25 Stevens, most notably the Stevens-Lord single shot pistols.[2]

The round was available with either solid lead or hollow point bullet[1] and developed a good reputation for small game (such as rabbit) and varmint.[1][2]

In comparison to the .22 Long Rifle some sources note that its ballistics suffered from an excessively high trajectory for a rifle cartridge (a drop of 5.1 in (130 mm) at 100 yd (91 m)),[1] while others praise its inherent accuracy, and larger versatility due to being much more powerful, especially when being used in revolvers.[2]

Serving as the parent for the less-successful .25 Stevens Short and experimental Remington .267 Rimfire, it was dropped in 1942.

Notable handgun authority Elmer Keith lamented its demise and advocated its revival for use in revolvers.[2]
End of Wikipedia info.

I also hand searched the latest edition of the "Bluebook Of Gun Values" in the "Stevens" section and found that Stevens also made one "bolt action" Rifle that was offered in the Stevens 25 Rimfire cartridge from 1935 to 1947 and that was the Model 53! 25 Stevens cartridge chamberings in this caliber are worth 35% more than the 22 LR or 22 WMR in that model!
Stevens also made pistols in 25 Stevens Rimfire the Model Target Single! This pistol was discontinued in 1939.
Anyway the cartridge itself is a cool looking little thing - I wish I could post pictures.
Learn something everyday it seems - even for an old timey gun collector.
Hold into the wind
VarmintGuy