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Talk:Berdan Rifle: Difference between revisions
(→Russian Berdan caliber - 10.67 vs 10.75 mm: new section) |
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[[File:Berdan Dragoon rifle.jpg|thumb|none|400px|Russian Berdan № 2 (M1870) Dragoon rifle - 10.75x58mm R]] | [[File:Berdan Dragoon rifle.jpg|thumb|none|400px|Russian Berdan № 2 (M1870) Dragoon rifle - 10.75x58mm R]] | ||
[[File:Berdanka-28-Gauge.jpg|thumb|none|400px|''Berdanka'' bolt action shotgun - 28 Gauge]] | [[File:Berdanka-28-Gauge.jpg|thumb|none|400px|''Berdanka'' bolt action shotgun - 28 Gauge]] | ||
== Russian Berdan caliber - 10.67 vs 10.75 mm == | |||
I see that the caliber is changed from 10.67 to 10.75 mm. This is not so simple. The Russian designation of the caliber was "4.2 line", i.e. .42 inch. As the calibers in Russia were measured between the lands in the rifling and not the grooves, the Russian designation of the caliber in mm is 10.67, while the Western method of measuring gives 10.75. Same thing as with 9 mm PM, for example, that has the real diameter of the bullet 9.27. But all reference books call PM bullet 9 mm. Same thing with Berdan bullet, at least in Russian reference books - it is called 10.67 (as well as Smith & Wesson Russian revolver that is also "4.2 line"). I'm not so sure about how the Berdan caliber is designated in English reference books. But still I think that replacing commonly used 10.67 to may be more correct but less common 10.75 without any discussion isn't good. Thanks for any opinions. --[[User:Greg-Z|Greg-Z]] ([[User talk:Greg-Z|talk]]) 00:55, 22 November 2021 (EST) | |||
Revision as of 05:55, 22 November 2021
Additional Images
Russian Berdan caliber - 10.67 vs 10.75 mm
I see that the caliber is changed from 10.67 to 10.75 mm. This is not so simple. The Russian designation of the caliber was "4.2 line", i.e. .42 inch. As the calibers in Russia were measured between the lands in the rifling and not the grooves, the Russian designation of the caliber in mm is 10.67, while the Western method of measuring gives 10.75. Same thing as with 9 mm PM, for example, that has the real diameter of the bullet 9.27. But all reference books call PM bullet 9 mm. Same thing with Berdan bullet, at least in Russian reference books - it is called 10.67 (as well as Smith & Wesson Russian revolver that is also "4.2 line"). I'm not so sure about how the Berdan caliber is designated in English reference books. But still I think that replacing commonly used 10.67 to may be more correct but less common 10.75 without any discussion isn't good. Thanks for any opinions. --Greg-Z (talk) 00:55, 22 November 2021 (EST)