Talk:8×63mm patron m/32

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Untitled[edit]

Changes:

The rebate in the rim was merely 0.25mm which is 2%.
Maximum range: "plunging fire" is no the same as the infantry supporting "indirect fire"
Shortened the part about gevär m/40 to keep focus on the cartridge.
Added a Swedish source.
The manufacturer is Aktiebolaget Bofors, usually written as AB Bofors.
Improved the flow of the text.

BP OMowe (talk) 17:16, 3 March 2013 (UTC)[reply]

Hi, First thanks for your contributions and introducing some Swedish reference material. Sadly the 8x63 mm patron m/32 nomenclature does not conform to the conventions used for metric cartridges nomenclature used in Wikipedia. Metric cartridges in Wikipedia English articles use the AxBmm other stuff pattern. For this cartridge I read several alternatives for the other stuff part. What do you think is the most appropriate other stuff or can we omit the other stuff? Sadly we can not use the C.I.P. rulings nor SAAMI guidelines as a help for the most appropriate cartridge nomenclature, since there are no data sheets available. Can you provide information if this cartridge was used by sport shooters and hunters, since it performs quite close to the 8×64mm S cartridge and the rebated rim idea was later used in the bigger 8×68mm S cartridge?--Francis Flinch (talk) 19:41, 3 March 2013 (UTC)[reply]

To my knowledge, this was a strictly military round and hence hasn't been produced for the civilian market even if rumour has it some macho Americans picked up the Gevär m/40 as a hunting rifle since it is the most powerful service rifle ever issued. Perhaps unique to Sweden is the development processes, where the branch administrations have their own design engineers working close with the manufacturer (in this case Bofors) meaning the original designation and the service designation is one and the same: cartridge m/32 where the "m/" means it's an army number while the navy used "M/". Only combat I know it's been used in was during the Congo-conflict in the 1960s. BP OMowe (talk) 20:14, 3 March 2013 (UTC)[reply]

That implies 8×63mm patron m/32 might be a Wikipedia nomenclature that conforms to the AxBmm other stuff format, meaning only the mm has to be moved to the left.--Francis Flinch (talk) 20:47, 3 March 2013 (UTC)[reply]

Dimensions[edit]

Which sources have been used for the dimensions? It says in the info box that the bullet diameter is 8.20 mm when its 7.87 mm irl.--Blockhaj (talk) 08:38, 13 October 2018 (UTC)[reply]

A sources list that points to a 8 mm (.323) S-bore; Ø of the lands = 7.89 mm (0.311 in), Ø grooves = 8.20 mm (0.323 in):

I expect measured 8×63mm patron m/32 projectiles intended for use in S-bored barrels often to be a few hundreds mm below 8.20 mm diameter, as 8.20 mm is the maximum projectile diameter. An actual projectile diameter of 7.87 mm (the lands diameter) would be a bad idea to use in an S-bore dimensioned barrel, as it is not wide enough to properly work in such a barrel. Before and after World War I it became a common design choice to use approximately the grooves diameter for the corresponding FMJ bullet diameter.--Francis Flinch (talk) 12:55, 13 October 2018 (UTC)[reply]

The Swedish source about development states the bullet is 7,9mm, not sure where the S-bore came into this, not do I know why Blockhaj introduced the 7.87mm in this edit as he as usual didn't include any sources.

Now looking at page 23 in the Ammunition registry for the Swedish army, it seems the over all length of the cartridge is 86mm, whereof the bullet protrusion is 22mm. This leaves a case length of 64mm rather than the 63mm stated in the article. Older AmmRegs state 63mm for the casing and 22mm for bullet protrusion, which leaves two options: printing error in the later AmReg, or a slight change in the case length. BP OMowe (talk) 01:44, 23 December 2020 (UTC)[reply]

Long time since i added that but i took meassurements on dummy 8 mm m/32 ammo and the inner bore of the barrel of a 8 mm ksp m/22 and both showed 7.87 mm in diameter.--Blockhaj (talk) 03:25, 23 December 2020 (UTC)[reply]